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What kind of sentence is this? Tammy gave me flowers for no reason.
[ "exclamatory", "declarative" ]
1
closed choice
grade4
language science
punctuation
Sentences, fragments, and run-ons
Is the sentence declarative, interrogative, imperative, or exclamatory?
There are four kinds of sentences. A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period. I have an older brother and a younger sister. An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark. How tall are you? An imperative sentence is a command. It makes a request or tells someone to do something. An imperative sentence usually ends with a period. If the command shows strong feeling, it ends with an exclamation point. Read the first chapter by next week. Look out for that car! An exclamatory sentence is like a statement, but it shows surprise or strong feeling. An exclamatory sentence always ends with an exclamation point. Some whales are over ninety feet long! I can't wait until tomorrow!
The sentence tells about something, and it ends with a period. It is a declarative sentence.
Compare the motion of three sailboats. Which sailboat was moving at the highest speed?
[ "a sailboat that moved 55kilometers west in 5hours", "a sailboat that moved 40kilometers east in 5hours", "a sailboat that moved 25kilometers east in 5hours" ]
0
closed choice
grade3
natural science
physics
Force and motion
Compare the speeds of moving objects
An object's speed tells you how fast the object is moving. Speed depends on both distance and time. Distance tells you how far the object has moved. One unit used to measure distance is the kilometer. Time tells you how long the object has spent moving. One unit used to measure time is the hour. Think about objects moving for the same amount of time. The object that is moving the fastest will go the farthest distance in that time. It is moving at the highest speed.
Look at the distance each sailboat moved and the time it took to move that distance. The direction each sailboat moved does not affect its speed. Notice that each sailboat moved for 5 hours. The sailboat that moved 55 kilometers moved the farthest distance in that time. So, that sailboat must have moved at the highest speed.
Which figure of speech is used in this text? Abdul's '64 Impala groaned as he turned the ignition. Yet again he resolved to refurbish it over the summer.
[ "personification", "simile" ]
0
closed choice
grade9
language science
figurative-language
Literary devices
Classify figures of speech: review
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Alliteration is the repetition of sounds at the beginning of nearby words. What a lucky little lady you are! An allusion is a brief reference to something or someone well known, often from history or literature. "I'd better get home before I turn into a pumpkin!" Lila remarked. An idiom is an expression that cannot be understood literally. Its meaning must be learned. The assignment was a piece of cake. A simile uses like or as to compare two things that are not actually alike. The cat's fur was as dark as the night. A metaphor compares two things that are not actually alike without using like or as. The snow formed a blanket over the town. Onomatopoeia involves using a word that expresses a sound. The scrambled eggs hit the floor with a splat. Personification is giving human characteristics to nonhuman things. The trees danced in the wind. A pun involves using a word or phrase in a humorous way that suggests more than one meaning. A great new broom is sweeping the nation. Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic. Olivia seems thrilled that her car keeps breaking down. Each breakdown is as enjoyable as a punch to the face.
The text uses personification, giving human characteristics to nonhuman things. Abdul's '64 Impala groaned describes the car as if it were human.
Would you find the word papoose on a dictionary page with the following guide words? pitch - pork
[ "yes", "no" ]
1
yes or no
grade5
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since papoose is not between the guide words pitch - pork, it would not be found on that page.
Which tense does the sentence use? Erica and Vicky win the game every time.
[ "past tense", "future tense", "present tense" ]
2
closed choice
grade2
language science
verbs
Verb tense
Is the sentence in the past, present, or future tense?
Present tense verbs tell you about something that is happening now. Most present-tense verbs are regular. They have no ending, or they end in -s or -es. Two verbs are irregular in the present tense, to be and to have. You must remember their forms. Past tense verbs tell you about something that has already happened. Most past-tense verbs are regular. They end in -ed. Some verbs are irregular in the past tense. You must remember their past-tense forms. Future tense verbs tell you about something that is going to happen. All future-tense verbs use the word will. Present | Past | Future walk, walks | walked | will walk go, goes | went | will go
The sentence is in present tense. You can tell because it uses a present-tense verb, win. The verb tells you about something that is true or happening now.
Compare the motion of two sailboats. Which sailboat was moving at a lower speed?
[ "a sailboat that moved 50kilometers in 5hours", "a sailboat that moved 90kilometers in 5hours" ]
0
closed choice
grade2
natural science
physics
Force and motion
Compare the speeds of moving objects
An object's speed tells you how fast the object is moving. Speed depends on both distance and time. Distance tells you how far the object has moved. One unit used to measure distance is the kilometer. Time tells you how long the object has spent moving. One unit used to measure time is the hour. Think about two objects moving for the same amount of time. The object that is moving slower will go a shorter distance in that time. It is moving at a lower speed.
Look at the distance each sailboat moved and the time it took to move that distance. One sailboat moved 50 kilometers in 5 hours. The other sailboat moved 90 kilometers in 5 hours. Notice that each sailboat spent the same amount of time moving. The sailboat that moved 50 kilometers moved a shorter distance in that time. So, that sailboat must have moved at a lower speed.
Which type of sentence is this? Russia has a variety of natural resources, including oil, natural gas, timber, iron ore, copper, and lead.
[ "compound-complex", "simple", "complex", "compound" ]
1
closed choice
grade10
language science
grammar
Phrases and clauses
Is the sentence simple, compound, complex, or compound-complex?
A clause is a group of words that contains both a subject and a predicate. An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence. the oranges on our tree are ripe The clause can stand alone. It is independent. after we pick up Kevin from work The clause cannot stand alone. It is dependent. A simple sentence is made up of a single independent clause. Ben and I spent all day relaxing by the pool. Some simple sentences have introductory phrases, but the introductory phrase is part of the predicate. In the winter, Ben usually wears his heavy coat. Ben usually wears his heavy coat in the winter. A compound sentence is made up of two independent clauses joined by a coordinating conjunction such as and, but, or, or so. We saw the flash of lightning, and seconds later we heard a rumble of thunder. A complex sentence is made up of an independent clause and a dependent clause. The dependent clause in a complex sentence usually begins with a subordinating conjunction or relative pronoun. Subordinating conjunctions include after, although, as, because, before, if, since, unless, until, when, and while. Relative pronouns include that, which, who, whom, or whose. If she ever gets the chance, Terri would love to visit the Egyptian pyramids. During his trip to Italy, Tony visited the Trevi Fountain, which is in Rome. A compound-complex sentence is made up of two or more independent clauses and one or more dependent clauses. After Samantha left work, she stopped at the bank, and then she went to the gym. Sometimes a dependent clause in a complex or compound-complex sentence can interrupt an independent clause. Orcas that are kept in captivity often have bent dorsal fins.
The sentence is simple. It is a single independent clause. Russia has a variety of natural resources, including oil, natural gas, timber, iron ore, copper, and lead.
Select the animal that has a backbone.
[ "luna moth", "salt water crocodile" ]
1
Hint: Mammals, birds, fish, reptiles, and amphibians all have backbones.
closed choice
grade2
natural science
biology
Classification
Identify animals with and without backbones
Some animals have a backbone. The backbone is made of many bones in an animal's back. An animal's backbone helps connect the different parts of its body. In the drawings below, each animal's backbone is colored orange. Other animals do not have a backbone. In fact, these animals don't have any bones! Some animals without backbones have a hard outer cover. Other animals have a soft body.
A salt water crocodile is a reptile. Like other reptiles, a salt water crocodile has a backbone. A luna moth is an insect. Like other insects, a luna moth does not have a backbone. It has a hard outer cover.
Would you find the word soot on a dictionary page with the following guide words? shove - sponge
[ "no", "yes" ]
1
yes or no
grade8
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since soot is between the guide words shove - sponge, it would be found on that page.
Would you find the word capsule on a dictionary page with the following guide words? child - curse
[ "yes", "no" ]
1
yes or no
grade5
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since capsule is not between the guide words child - curse, it would not be found on that page.
Which object has more thermal energy?
[ "a 350-gram mug of cocoa at a temperature of 30°C", "a 350-gram mug of cocoa at a temperature of 75°C" ]
1
The objects are identical except for their temperatures.
closed choice
grade3
natural science
physics
Heat and thermal energy
How is temperature related to thermal energy?
All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy. Temperature measures how hot or cold matter is. If the particles in matter move faster, the temperature goes up. The matter now has both more thermal energy and a higher temperature.
The two mugs of cocoa have the same mass but different temperatures. Since the 75°C mug of cocoa is hotter than the 30°C mug of cocoa, it has more thermal energy.
Is the following trait inherited or acquired? Lisa plays basketball.
[ "acquired", "inherited" ]
0
closed choice
grade5
natural science
biology
Traits and heredity
Identify inherited and acquired traits
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.
People are not born knowing how to play basketball. Instead, some people learn how to play basketball. Playing the sport takes practice. So, playing basketball is an acquired trait.
Using only these supplies, which question can Aubrey investigate with an experiment?
[ "Do scented candles or unscented candles produce more smoke?", "Do candles with thick wicks or with thin wicks produce more smoke?", "Do large candles or small candles produce more smoke?" ]
1
Aubrey is burning some new candles. She notices that they produce different amounts of smoke. She wonders what factors affect how much smoke a candle produces. So, she decides to design an experiment. She has the following supplies available: two large unscented candles with thick wicks two large unscented candles with thin wicks a box of matches
closed choice
grade6
natural science
science-and-engineering-practices
Designing experiments
Identify questions that can be investigated with a set of materials
Experiments can be designed to answer specific questions. When designing an experiment, you must identify the supplies that are necessary to answer your question. In order to do this, you need to figure out what will be tested and what will be measured during the experiment. Imagine that you are wondering if plants grow to different heights when planted in different types of soil. How might you decide what supplies are necessary to conduct this experiment? First, you need to identify the part of the experiment that will be tested, which is the independent variable. This is usually the part of the experiment that is different or changed. In this case, you would like to know how plants grow in different types of soil. So, you must have different types of soil available. Next, you need to identify the part of the experiment that will be measured or observed, which is the dependent variable. In this experiment, you would like to know if some plants grow taller than others. So, you must be able to compare the plants' heights. To do this, you can observe which plants are taller by looking at them, or you can measure their exact heights with a meterstick. So, if you have different types of soil and can observe or measure the heights of your plants, then you have the supplies you need to investigate your question with an experiment!
What do these two changes have in common? erosion caused by wind breaking a piece of glass
[ "Both are caused by cooling.", "Both are chemical changes.", "Both are caused by heating.", "Both are only physical changes." ]
3
closed choice
grade4
natural science
chemistry
Physical and chemical change
Compare physical and chemical changes
Chemical changes and physical changes are two common ways matter can change. In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different. Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change caused by heating. When paper gets hot enough, it re­acts with oxygen in the air and burns. The paper and oxygen change into ash and smoke. In a physical change, the type of matter stays the same. The types of matter before and after a physical change are always the same. A change of state is a type of physical change. Changes of state can be caused by heating or cooling. For example, ice melting is a physical change that can be caused by heating. Ice and liquid water are made of the same type of matter: water. The law of conservation of mass says that all physical and chemical changes conserve mass. Conserve means to keep the same. So, the total mass before a physical or chemical change is equal to the total mass after the change.
Step 1: Think about each change. Erosion caused by wind is a physical change. The wind carries away tiny pieces of rock. But the pieces of rock do not become a different type of matter. Breaking a piece of glass is a physical change. The glass gets broken into pieces. But each piece is still made of the same type of matter. Step 2: Look at each answer choice. Both are only physical changes. Both changes are physical changes. No new matter is created. Both are chemical changes. Both changes are physical changes. They are not chemical changes. Both are caused by heating. Neither change is caused by heating. Both are caused by cooling. Neither change is caused by cooling.
What information supports the conclusion that Patty inherited this trait?
[ "Patty's parents were born with wavy hair. They passed down this trait to Patty.", "Patty and her mother both have short hair." ]
0
Read the description of a trait. Patty has wavy hair.
closed choice
grade4
natural science
biology
Traits and heredity
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment.
Which phrase has a more negative connotation?
[ "studying someone's outfit", "scrutinizing someone's outfit" ]
1
closed choice
grade6
language science
vocabulary
Shades of meaning
Positive and negative connotation
Connotation is the feeling or idea that goes along with a word or phrase. Some words are close in meaning but have different connotations. For example, think about the words eager and impatient. They both mean wanting something to happen, but they have different connotations. Eager has a positive connotation. It is a nice word. An eager person is happy and excited. Impatient has a negative connotation. It is not a nice word. An impatient person is often pushy and demanding.
Scrutinizing someone's outfit has a more negative connotation. Scrutinizing and studying both denote examining something closely. However, scrutinizing suggests looking at something in a critical way, while studying suggests looking at something in order to learn more about it.
What information supports the conclusion that Nellie acquired this trait?
[ "Nellie learned biology by doing experiments.", "Nellie is most interested in plant biology." ]
0
Read the description of a trait. Nellie knows a lot about biology.
closed choice
grade3
natural science
biology
Heredity
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment.
Select the animal.
[ "Apple trees can grow fruit.", "Vultures eat mammals and birds.", "Dandelions can grow small yellow flowers.", "Pine trees have green leaves." ]
1
closed choice
grade3
natural science
biology
Classification
Identify plants and animals
Plants and animals are living things. Living things are called organisms. Plants come in many shapes and sizes. Most plants grow in the ground. They might grow leaves, flowers, and fruit. Plants cannot move around on their own like animals can. Animals also come in many shapes and sizes. Most animals can move around. Animals might run, swim, jump, or fly. Animals eat plants or other organisms for food.
An apple tree is a plant. It can grow fruit. People have been growing apples for thousands of years. There are more than 7,500 types of apples! A vulture is an animal. It eats mammals and birds. Vultures usually do not hunt live animals. They eat animals that are already dead! This behavior is called scavenging. A pine tree is a plant. It has green leaves. Pine tree seeds grow in cones. Trees that grow cones are called conifers. A dandelion is a plant. It can grow small yellow flowers. Dandelion seeds can be blown long distances by the wind.
Which closing is correct for a letter?
[ "your friend,\nMark", "Your friend,\nMark" ]
1
closed choice
grade2
language science
capitalization
Capitalization
Greetings and closings of letters
A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue. Dear Aunt Sue, I'm glad you could come to my party, and thank you for the birthday gift. I could not have asked for a better one! Every time I see it, I think of you. With love, Rory
The first closing is correct: Its first word is capitalized, and it ends with a comma.
What is the mass of a passenger airplane?
[ "41 tons", "41 pounds", "41 ounces" ]
0
Select the best estimate.
closed choice
grade5
natural science
units-and-measurement
Units and measurement
Choose customary units of mass
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Mass is a measurement of how much matter something contains. There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or tons. There are 16 ounces in 1 pound and 2,000 pounds in 1 ton. So, 1 ounce is less than 1 pound and much less than 1 ton. A slice of bread has a mass of about 1 ounce, while a can of beans has a mass of about 1 pound. A small car has a mass of about 1 ton.
The best estimate for the mass of a passenger airplane is 41 tons. 41 ounces and 41 pounds are both too light.
What is the source of the allusion in the sentence below? The drought is worsening, and the state politicians are fiddling while Rome burns!
[ "a poem", "history" ]
1
closed choice
grade9
language science
figurative-language
Literary devices
Recall the source of an allusion
An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words. "I'd better get home before I turn into a pumpkin!" Lila remarked. Here, Lila alludes to the fairy tale "Cinderella," in which Cinderella must leave the ball before the coach that brought her transforms into a pumpkin. The allusion shows that Lila must depart immediately.
The source of the allusion fiddling while Rome burns is history. According to some accounts, the Roman emperor Nero stood by and did nothing while Rome burned. He is said to have played the fiddle while the crisis unfolded. The allusion fiddling while Rome burns means ignoring a critical situation.
Would you find the word blink on a dictionary page with the following guide words? bet - button
[ "yes", "no" ]
0
yes or no
grade5
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since blink is between the guide words bet - button, it would be found on that page.
Which text uses the word peruse in its traditional sense?
[ "Duncan perused a catalog from his wife's favorite clothing store, searching for the perfect birthday gift.", "Duncan perused a clothing catalog as he waited for his appointment, flipping through the pages distractedly." ]
0
closed choice
grade10
language science
writing-strategies
Word usage and nuance
Explore words with new or contested usages
Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner. When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be more commonly used, many people consider a word's traditional definition to be the correct usage. Being able to distinguish the different uses of a word can help you use it appropriately for different audiences. Britney perused her notes, carefully preparing for her exam. The traditional usage above is considered more standard. David perused the magazine, absentmindedly flipping through the pages. The nontraditional usage above is now commonly used, but traditional style guides generally advise against it.
The first text uses peruse in its traditional sense: to examine in detail. Duncan perused a catalog from his wife's favorite clothing store, searching for the perfect birthday gift. The second text uses peruse in its nontraditional sense: to look through in a casual manner. Duncan perused a clothing catalog as he waited for his appointment, flipping through the pages distractedly. Most style guides recommend to use the traditional sense of the word peruse because it is considered more standard.
What is the volume of a test tube?
[ "12 liters", "12 milliliters" ]
1
Select the better estimate.
closed choice
grade5
natural science
units-and-measurement
Units and measurement
Choose metric units of volume
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Volume is a measurement of how much space something takes up. There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters. There are 1,000 milliliters in 1 liter. So, 1 milliliter is much less than 1 liter. A raindrop has a volume of about 20 milliliters, while a large soda bottle has a volume of 2 liters. The flask shown here measures volumes up to 500 milliliters.
The better estimate for the volume of a test tube is 12 milliliters. 12 liters is too much.
Which figure of speech is used in this text? Ladies and gentlemen, this is your captain speaking. We have a small problem. All four engines have stopped . . . I trust you are not in too much distress. —Captain Eric Moody, after his Boeing 747's engines failed
[ "assonance", "understatement" ]
1
closed choice
grade12
language science
figurative-language
Literary devices
Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses. We are united. We are powerful. We are winners. Antithesis involves contrasting opposing ideas within a parallel grammatical structure. I want to help, not to hurt. Apostrophe is a direct address to an absent person or a nonhuman entity. Oh, little bird, what makes you sing so beautifully? Assonance is the repetition of a vowel sound in a series of nearby words. Try to light the fire. Chiasmus is an expression in which the second half parallels the first but reverses the order of words. Never let a fool kiss you or a kiss fool you. Understatement involves deliberately representing something as less serious or important than it really is. As you know, it can get a little cold in the Antarctic.
The text uses understatement, which involves deliberately representing something as less serious or important than it really is. We have a small problem is an understatement, since the plane was likely to crash.
Which type of sentence is this? As Dan sat down on the rickety old chair, it abruptly collapsed beneath him.
[ "simple", "compound-complex", "compound", "complex" ]
3
closed choice
grade8
language science
grammar
Phrases and clauses
Is the sentence simple, compound, complex, or compound-complex?
A clause is a group of words that contains both a subject and a predicate. An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence. the oranges on our tree are ripe The clause can stand alone. It is independent. after we pick up Kevin from work The clause cannot stand alone. It is dependent. A simple sentence is made up of a single independent clause. Ben and I spent all day relaxing by the pool. Some simple sentences have introductory phrases, but the introductory phrase is part of the predicate. In the winter, Ben usually wears his heavy coat. Ben usually wears his heavy coat in the winter. A compound sentence is made up of two independent clauses joined by a coordinating conjunction such as and, but, or, or so. We saw the flash of lightning, and seconds later we heard a rumble of thunder. A complex sentence is made up of an independent clause and a dependent clause. The dependent clause in a complex sentence usually begins with a subordinating conjunction or relative pronoun. Subordinating conjunctions include after, although, as, because, before, if, since, unless, until, when, and while. Relative pronouns include that, which, who, whom, or whose. If she ever gets the chance, Terri would love to visit the Egyptian pyramids. During his trip to Italy, Tony visited the Trevi Fountain, which is in Rome. A compound-complex sentence is made up of two or more independent clauses and one or more dependent clauses. After Samantha left work, she stopped at the bank, and then she went to the gym. Sometimes a dependent clause in a complex or compound-complex sentence can interrupt an independent clause. Orcas that are kept in captivity often have bent dorsal fins.
The sentence is complex. It is made up of an independent clause and a dependent clause. The dependent clause begins with the subordinating conjunction as. As Dan sat down on the rickety old chair, it abruptly collapsed beneath him.
Which logical fallacy is used in the text? Don't be deceived by Beth Everett's articles on rural, blue-collar workers. Her husband is a fancy investment banker, so she can't possibly understand their situation.
[ "guilt by association: a negative association intended to discredit someone or something", "circular reasoning: an argument that supports a claim with the claim itself", "appeal to nature: the assumption that natural things are always good" ]
0
closed choice
grade10
language science
writing-strategies
Developing and supporting arguments
Classify logical fallacies
A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions. A logical fallacy may present irrelevant information: Fallacy | Description ad hominem | an attack against the person making the argument, rather than the argument itself appeal to nature | an argument that assumes the natural choice is always the best choice bandwagon fallacy | an argument that assumes the popular choice is always the best choice circular reasoning | an argument that supports a claim with the claim itself guilt by association | an unfair negative association with another person or group that is intended to discredit someone or something A logical fallacy may misrepresent the issues at hand: Fallacy | Description false causation | the assumption that because two things happened together, one caused the other false dichotomy | an argument that presents only two choices when more options exist hasty generalization | a broad claim based on too few observations slippery slope fallacy | the false assumption that a small first step will necessarily lead to extreme consequences straw man | a misrepresentation of an opponent's position that makes it easier to argue against
The text argues that Beth Everett can't understand rural, blue-collar workers because she is associated with an urban newspaper. However, where Beth works doesn't necessarily indicate anything about her ability to empathize. This illustrates a type of logical fallacy known as guilt by association.
Which figure of speech is used in this text? So we beat on . . . borne back ceaselessly into the past. —F. Scott Fitzgerald, The Great Gatsby
[ "alliteration", "simile" ]
0
closed choice
grade10
language science
figurative-language
Literary devices
Classify figures of speech: review
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Alliteration is the repetition of sounds at the beginning of nearby words. What a lucky little lady you are! An allusion is a brief reference to something or someone well known, often from history or literature. "I'd better get home before I turn into a pumpkin!" Lila remarked. An idiom is an expression that cannot be understood literally. Its meaning must be learned. The assignment was a piece of cake. A simile uses like or as to compare two things that are not actually alike. The cat's fur was as dark as the night. A metaphor compares two things that are not actually alike without using like or as. The snow formed a blanket over the town. Onomatopoeia involves using a word that expresses a sound. The scrambled eggs hit the floor with a splat. Personification is giving human characteristics to nonhuman things. The trees danced in the wind. A pun involves using a word or phrase in a humorous way that suggests more than one meaning. A great new broom is sweeping the nation. Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic. Olivia seems thrilled that her car keeps breaking down. Each breakdown is as enjoyable as a punch to the face.
The text uses alliteration, the repetition of sounds at the beginning of nearby words. Beat on . . . borne back repeats the b sound.
What is the mass of an elephant?
[ "4 pounds", "4 ounces", "4 tons" ]
2
Select the best estimate.
closed choice
grade4
natural science
units-and-measurement
Units and measurement
Choose customary units of mass
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Mass is a measurement of how much matter something contains. There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or tons. There are 16 ounces in 1 pound and 2,000 pounds in 1 ton. So, 1 ounce is less than 1 pound and much less than 1 ton. A slice of bread has a mass of about 1 ounce, while a can of beans has a mass of about 1 pound. A small car has a mass of about 1 ton.
The best estimate for the mass of an elephant is 4 tons. 4 ounces and 4 pounds are both too light.
What kind of sentence is this? That's the best bakery in town!
[ "exclamatory", "interrogative" ]
0
closed choice
grade5
language science
punctuation
Sentences, fragments, and run-ons
Is the sentence declarative, interrogative, imperative, or exclamatory?
There are four kinds of sentences. A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period. I have an older brother and a younger sister. An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark. How tall are you? An imperative sentence is a command. It makes a request or tells someone to do something. An imperative sentence usually ends with a period. If the command shows strong feeling, it ends with an exclamation point. Read the first chapter by next week. Look out for that car! An exclamatory sentence is like a statement, but it shows surprise or strong feeling. An exclamatory sentence always ends with an exclamation point. Some whales are over ninety feet long! I can't wait until tomorrow!
The sentence tells about something, but it shows strong feeling and ends with an exclamation point. It is an exclamatory sentence.
What is the volume of a salt shaker?
[ "50 milliliters", "50 liters" ]
0
Select the better estimate.
closed choice
grade5
natural science
units-and-measurement
Units and measurement
Choose metric units of volume
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Volume is a measurement of how much space something takes up. There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters. There are 1,000 milliliters in 1 liter. So, 1 milliliter is much less than 1 liter. A raindrop has a volume of about 20 milliliters, while a large soda bottle has a volume of 2 liters. The flask shown here measures volumes up to 500 milliliters.
The better estimate for the volume of a salt shaker is 50 milliliters. 50 liters is too much.
Which text uses the word ironic in its traditional sense?
[ "Last winter, Reid took a vacation to Florida to escape Boston's cold, snowy weather. In an ironic twist, a rare snowstorm happened to hit Florida that week.", "Last winter, Reid took a vacation to Florida to escape Boston's cold, snowy weather. In an ironic twist, he just missed a few of his college friends, who had been in Florida the previous week." ]
0
closed choice
grade12
language science
writing-strategies
Word usage and nuance
Explore words with new or contested usages
Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner. When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be more commonly used, many people consider a word's traditional definition to be the correct usage. Being able to distinguish the different uses of a word can help you use it appropriately for different audiences. Britney perused her notes, carefully preparing for her exam. The traditional usage above is considered more standard. David perused the magazine, absentmindedly flipping through the pages. The nontraditional usage above is now commonly used, but traditional style guides generally advise against it.
The first text uses ironic in its traditional sense: contrary to what was intended, often in an amusing way. It's ironic because Reid tried to get away from the snow but found himself in a snowstorm regardless. Last winter, Reid took a vacation to Florida to escape Boston's cold, snowy weather. In an ironic twist, a rare snowstorm happened to hit Florida that week. The second text uses ironic in its nontraditional sense: marked by coincidence. It was a coincidence that Reid's friends were in Florida the week before. Last winter, Reid took a vacation to Florida to escape Boston's cold, snowy weather. In an ironic twist, he just missed a few of his college friends, who had been in Florida the previous week. Most style guides recommend to avoid using the nontraditional sense of the word ironic because it is generally considered incorrect.
Complete the sentence so that it uses personification. The wind blew through my hair and () my ears.
[ "whispered in", "chilled" ]
0
closed choice
grade8
language science
writing-strategies
Creative techniques
Use personification
Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point. The trees danced in the wind. The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, the personification suggests that the trees are moving.
Complete the sentence with the phrase whispered in. It describes the wind as if it were a person speaking quietly.
Compare the motion of two mountain bikers. Which mountain biker was moving at a lower speed?
[ "a mountain biker who moved 105miles in 10hours", "a mountain biker who moved 90miles in 10hours" ]
1
closed choice
grade2
natural science
physics
Force and motion
Compare the speeds of moving objects
An object's speed tells you how fast the object is moving. Speed depends on both distance and time. Distance tells you how far the object has moved. One unit used to measure distance is the mile. Time tells you how long the object has spent moving. One unit used to measure time is the hour. Think about two objects moving for the same amount of time. The object that is moving slower will go a shorter distance in that time. It is moving at a lower speed.
Look at the distance each mountain biker moved and the time it took to move that distance. One mountain biker moved 90 miles in 10 hours. The other mountain biker moved 105 miles in 10 hours. Notice that each mountain biker spent the same amount of time moving. The mountain biker who moved 90 miles moved a shorter distance in that time. So, that mountain biker must have moved at a lower speed.
Which is a compound sentence?
[ "The nervous swimmer steps onto the diving platform.", "Amy forgot to bring her dictionary, so she will borrow mine." ]
1
closed choice
grade4
language science
grammar
Sentences, fragments, and run-ons
Is the sentence simple or compound?
A simple sentence is a sentence with only one subject and predicate. The pitcher threw the ball to first base. A compound sentence is two simple sentences joined by a comma and a conjunction such as and, but, or, or so. The pitcher threw the ball, and the batter hit it. Some simple sentences have a compound subject or a compound predicate, but they are not compound sentences. Anna and James will watch the fireworks tonight. This simple sentence has a compound subject, Anna and James. The singers bowed and walked off the stage. This simple sentence has a compound predicate, bowed and walked off the stage. Some simple sentences have introductory phrases, but they are not compound sentences. The introductory phrase is part of the predicate. In the winter, Farmer Ben wears his heavy coat. This is a simple sentence. There is one subject, Farmer Ben, and one predicate, wears his heavy coat in the winter.
The first sentence is the compound sentence. It is made up of two simple sentences joined by a comma and the conjunction so. Amy forgot to bring her dictionary, so she will borrow mine.
Select the one animal that has all of the cartilaginous fish traits listed above.
[ "Great white sharks use rows of jagged teeth to catch their prey. They have fins instead of limbs, and their skeleton is made of cartilage. Great white shark eggs do not have shells for protection. Instead, the eggs grow and hatch inside the mother shark.", "Western rattlesnakes have scaly, waterproof skin. They can use their fangs to inject venom into their prey. Western rattlesnakes lay eggs with shells and are usually found in dry areas." ]
0
Cartilaginous fish are a group of animals with similar traits. The following traits can be used to identify cartilaginous fish: They have fins, not limbs. They live underwater. They have a skeleton made of cartilage. They make eggs with no shells. Observe the animals and read the descriptions.
closed choice
grade5
natural science
biology
Classification
Use evidence to classify animals
Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live. How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, scientists compare the animal's traits to other animals' traits. Scientists classify animals with similar traits into a group.
To decide if an animal is part of a group, look at the traits of the group. Cartilaginous fish have the following traits: They have fins, not limbs. They live underwater. They have a skeleton made of cartilage. They make eggs with no shells. Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits. A western rattlesnake has the following traits: It has scaly, waterproof skin. It makes eggs with shells. A western rattlesnake does not have all of the traits of a cartilaginous fish. A western rattlesnake is a reptile. A great white shark has the following traits: It has fins, not limbs. It lives underwater. It has a skeleton made of cartilage. It makes eggs with no shells. A great white shark has the traits of a cartilaginous fish. A great white shark is a cartilaginous fish.
Complete the sentence. Breaking a rock in half is a ().
[ "chemical change", "physical change" ]
1
closed choice
grade2
natural science
chemistry
Physical and chemical change
Identify physical and chemical changes
Chemical changes and physical changes are two ways matter can change. In a chemical change, the type of matter changes. Burning a piece of paper is a chemical change. The paper changes into ash and smoke. In a physical change, the type of matter stays the same. Cutting a piece of paper is a physical change. The cut pieces are still made of paper. Ice melting is also a physical change. When ice melts, it changes from a solid to a liquid. But both ice and liquid water are made of the same type of matter: water! This kind of change is called a change of state.
Breaking a rock in half is a physical change. The rock gets broken into two pieces. But the pieces are still made of the same type of matter as the original rock.
Use the evidence in the text to select the photosynthetic organism.
[ "Snow leopards have special cells in their skin. These cells produce substances that help color the animals' fur.", "Polka dot plants have chloroplasts in their cells. The plants use these chloroplasts to capture light energy from the Sun." ]
1
closed choice
grade5
natural science
biology
Plants
Identify the photosynthetic organism
Organisms that carry out photosynthesis are called photosynthetic organisms. During photosynthesis, these organisms use light energy to turn water and carbon dioxide into sugars and oxygen. Photosynthetic organisms also often have the following characteristics: They are producers, which are organisms that make their own food inside their cells. Producers don't usually eat other organisms. Their cells contain chloroplasts. Chloroplasts are cell parts where photosynthesis occurs. Their chloroplasts often contain chlorophyll, which is green. Chlorophyll captures energy from sunlight to power photosynthesis. They use the sugars they make during photosynthesis as food. This food provides the organisms with the energy they need to live.
This organism is photosynthetic: The text tells you that polka dot plants have chloroplasts in their cells. This is evidence that the polka dot plant is a photosynthetic organism. This organism is not photosynthetic: The text does not provide evidence that the snow leopard is photosynthetic.
Does this passage describe the weather or the climate? Where Ernest lives, winter is the rainiest season of the year.
[ "weather", "climate" ]
1
closed choice
grade5
natural science
earth-science
Weather and climate
What's the difference between weather and climate?
The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere. Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day. Climate is the pattern of weather in a certain place. For example, summer temperatures in New York are usually higher than winter temperatures.
Read the text carefully. Where Ernest lives, winter is the rainiest season of the year. This passage tells you about the usual precipitation where Ernest lives. It does not describe what the weather is like on a particular day. So, this passage describes the climate.
Which correctly shows the title of a book?
[ "\"Secret of the Ninja\"", "***Secret of the Ninja***" ]
1
closed choice
grade9
language science
punctuation
Formatting
Formatting titles
The title of a book, movie, play, TV show, magazine, or newspaper should be in italics. If you write it by hand, it can be underlined instead. A Midsummer Night's Dream The title of a poem, song, article, or short story should be in quotation marks. "You Are My Sunshine"
A book should be in italics. The correct title is **Secret of the Ninja**.
What does the verbal irony in this text suggest? "This salsa could use a little more spice," Josh said as he gulped down water and wiped tears from his eyes.
[ "The salsa was tasteless.", "The salsa was too spicy." ]
1
closed choice
grade8
language science
figurative-language
Literary devices
Interpret figures of speech
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic. Olivia seems thrilled that her car keeps breaking down. Each breakdown is as enjoyable as a punch to the face.
The text uses verbal irony, which involves saying one thing but implying something very different. Could use a little more spice ironically suggests that the salsa was too spicy. Josh gulped down water and wiped tears from his eyes, indications that the salsa was indeed too spicy.
Would you find the word pulp on a dictionary page with the following guide words? pledge - precious
[ "yes", "no" ]
1
yes or no
grade5
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since pulp is not between the guide words pledge - precious, it would not be found on that page.
What information supports the conclusion that Jeffrey inherited this trait?
[ "Jeffrey's coworker also has curly hair.", "Jeffrey's biological father has curly hair.", "Jeffrey and his biological parents have brown hair." ]
1
Read the description of a trait. Jeffrey has curly hair.
closed choice
grade8
natural science
biology
Genes to traits
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits. Offspring receive their genes, and therefore gain their inherited traits, from their biological parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Parents do not pass acquired traits down to their offspring.
Which greeting is correct for a letter?
[ "Dear Dr. Durham,", "Dear dr. Durham," ]
0
closed choice
grade2
language science
capitalization
Capitalization
Greetings and closings of letters
A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue. Dear Aunt Sue, I'm glad you could come to my party, and thank you for the birthday gift. I could not have asked for a better one! Every time I see it, I think of you. With love, Rory
The second greeting is correct: Its first word is capitalized, and it ends with a comma. Dr. Durham is capitalized because it is a proper noun.
Complete the sentence so that it uses personification. The wind () dispersed the leaves that Zane had spent so long raking.
[ "completely", "carelessly" ]
1
closed choice
grade10
language science
writing-strategies
Creative techniques
Use personification
Personification is giving human characteristics to nonhuman things. It is a figure of speech that can be used to make writing more interesting or to emphasize a point. The trees danced in the wind. The word danced describes the trees as if they were people. Unlike people, however, trees can't actually dance. Instead, the personification suggests that the trees are moving.
Complete the sentence with the word carelessly. It describes the wind as if it were a person who didn't care.
What do these two changes have in common? tying a shoelace cutting a piece of rope
[ "Both are chemical changes.", "Both are only physical changes.", "Both are caused by cooling.", "Both are caused by heating." ]
1
closed choice
grade3
natural science
chemistry
Physical and chemical change
Compare physical and chemical changes
Chemical changes and physical changes are two common ways matter can change. In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different. Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change caused by heating. When paper gets hot enough, it re­acts with oxygen in the air and burns. The paper and oxygen change into ash and smoke. In a physical change, the type of matter stays the same. The types of matter before and after a physical change are always the same. A change of state is a type of physical change. Changes of state can be caused by heating or cooling. For example, ice melting is a physical change that can be caused by heating. Ice and liquid water are made of the same type of matter: water. The law of conservation of mass says that all physical and chemical changes conserve mass. Conserve means to keep the same. So, the total mass before a physical or chemical change is equal to the total mass after the change.
Step 1: Think about each change. Tying a shoelace is a physical change. The shoelace gets a different shape. But it is still made of the same type of matter. Cutting a piece of rope is a physical change. The rope is shorter after you cut it. But it is still made of the same type of matter as the uncut rope. Step 2: Look at each answer choice. Both are only physical changes. Both changes are physical changes. No new matter is created. Both are chemical changes. Both changes are physical changes. They are not chemical changes. Both are caused by heating. Neither change is caused by heating. Both are caused by cooling. Neither change is caused by cooling.
What kind of sentence is this? Marvin campaigned tirelessly in support of his neighbor's bid for elective office.
[ "interrogative", "exclamatory", "declarative" ]
2
closed choice
grade9
language science
punctuation
Sentences, fragments, and run-ons
Is the sentence declarative, interrogative, imperative, or exclamatory?
There are four kinds of sentences. A declarative sentence is a statement and always ends with a period. The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure. An imperative sentence makes a request or a demand and usually ends with a period. If a demand shows strong feeling, it can end with an exclamation point. For this assignment, use references to support your claims. Don't drive so quickly in the construction zone! An interrogative sentence asks a question and always ends with a question mark. Given the recent critiques of her new strategic plan, do you think the CEO will reconsider the company's direction? An exclamatory sentence is a statement that shows surprise or strong feeling. An exclamation always ends with an exclamation point. I can't wait to travel through Europe this summer!
The sentence is a statement and ends with a period. It is a declarative sentence.
Which closing is correct for a letter?
[ "Love,\nShannon", "love,\nShannon" ]
0
closed choice
grade4
language science
punctuation
Formatting
Greetings and closings of letters
A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue. Dear Aunt Sue, I'm glad you could come to my party, and thank you for the birthday gift. I could not have asked for a better one! Every time I see it, I think of you. With love, Rory
The second closing is correct: Its first word is capitalized, and it ends with a comma.
Which logical fallacy is used in the text? The mayor argued that we need to reduce funding for the animal shelter in order to balance the budget. Don't vote for someone who doesn't think the government should care about animals.
[ "guilt by association: a negative association intended to discredit someone or something", "straw man: a misrepresentation of an opponent's position that makes it easier to argue against", "false causation: the assumption that because two things happened together, one caused the other" ]
1
closed choice
grade11
language science
writing-strategies
Developing and supporting arguments
Classify logical fallacies
A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions. A logical fallacy may present irrelevant information: Fallacy | Description ad hominem | an attack against the person making the argument, rather than the argument itself appeal to nature | an argument that assumes the natural choice is always the best choice bandwagon fallacy | an argument that assumes the popular choice is always the best choice circular reasoning | an argument that supports a claim with the claim itself guilt by association | an unfair negative association with another person or group that is intended to discredit someone or something A logical fallacy may misrepresent the issues at hand: Fallacy | Description false causation | the assumption that because two things happened together, one caused the other false dichotomy | an argument that presents only two choices when more options exist hasty generalization | a broad claim based on too few observations slippery slope fallacy | the false assumption that a small first step will necessarily lead to extreme consequences straw man | a misrepresentation of an opponent's position that makes it easier to argue against
The text argues that the mayor doesn't think the government should care about animals. However, the mayor only argued that funding for the animal shelter needs to be reduced. This illustrates a type of logical fallacy known as a straw man.
Is the following trait inherited or acquired? Charlie knows how to type.
[ "inherited", "acquired" ]
1
Hint: Typing takes practice.
closed choice
grade4
natural science
biology
Traits and heredity
Identify inherited and acquired traits
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.
People are not born knowing how to type. Instead, many people learn how to type. So, typing is an acquired trait.
Which figure of speech is used in this text? "There's nothing I love more than skipping lunch," Mr. Crosby told the flight attendant when he learned that no food would be available on his cross-country flight.
[ "personification", "verbal irony" ]
1
closed choice
grade7
language science
figurative-language
Literary devices
Classify figures of speech
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Alliteration is the repetition of sounds at the beginning of nearby words. What a lucky little lady you are! An allusion is a brief reference to something or someone well known, often from history or literature. "I'd better get home before I turn into a pumpkin!" Lila remarked. An idiom is an expression that cannot be understood literally. Its meaning must be learned. The assignment was a piece of cake. A simile uses like or as to compare two things that are not actually alike. The cat's fur was as dark as the night. A metaphor compares two things that are not actually alike without using like or as. The snow formed a blanket over the town. Onomatopoeia involves using a word that expresses a sound. The scrambled eggs hit the floor with a splat. Personification is giving human characteristics to nonhuman things. The trees danced in the wind. A pun involves using a word or phrase in a humorous way that suggests more than one meaning. A great new broom is sweeping the nation. Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic. Olivia seems thrilled that her car keeps breaking down. Each breakdown is as enjoyable as a punch to the face.
The text uses verbal irony, which involves saying one thing but implying something very different. Nothing I love more shows verbal irony because Mr. Crosby is probably upset that there isn't anything to eat.
Which logical fallacy is used in the text? Thanks to her enduring popularity with employees, Rachel Randolph is the best-liked CEO in our company's history.
[ "false causation: the assumption that because two things happened together, one caused the other", "circular reasoning: an argument that supports a claim with the claim itself" ]
1
closed choice
grade7
language science
writing-strategies
Developing and supporting arguments
Classify logical fallacies
A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions. A logical fallacy may present irrelevant information: Fallacy | Description ad hominem | a personal attack meant to discredit one's opponent appeal to nature | an argument that assumes the natural choice is always the best choice bandwagon fallacy | an argument that assumes the popular choice is always the best choice circular reasoning | an argument that supports a claim with the claim itself guilt by association | an unfair negative association with another person or group that is intended to discredit someone or something red herring | the use of a completely unrelated topic in support of a claim A logical fallacy may misrepresent the issues at hand: Fallacy | Description false causation | the assumption that because two things happened together, one caused the other false dichotomy | an argument that presents only two choices when more options exist hasty generalization | a very broad claim based on very little evidence straw man | a misrepresentation of an opponent's position that makes it easier to argue against
The text argues that Rachel Randolph is well-liked, because she's popular. However, the "evidence" is just a restatement of the claim itself. This illustrates a type of logical fallacy known as circular reasoning.
Is the following trait inherited or acquired? Kimberly has naturally straight hair.
[ "inherited", "acquired" ]
0
closed choice
grade5
natural science
biology
Traits and heredity
Identify inherited and acquired traits
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.
Some humans are born with naturally straight hair. Others are born with naturally curly hair. Straight and curly are examples of hair texture. Some people use tools to change how their hair looks. But this doesn't affect the natural texture of their hair. So, having naturally straight hair is an inherited trait.
Use the evidence in the text to select the photosynthetic organism.
[ "Turkeys are large birds that eat nuts, berries, and insects. Turkeys use these foods to get energy.", "Avocado trees make sugars from carbon dioxide and water. These trees use the sugars as food." ]
1
closed choice
grade5
natural science
biology
Plants
Identify the photosynthetic organism
Organisms that carry out photosynthesis are called photosynthetic organisms. During photosynthesis, these organisms use light energy to turn water and carbon dioxide into sugars and oxygen. Photosynthetic organisms also often have the following characteristics: They are producers, which are organisms that make their own food inside their cells. Producers don't usually eat other organisms. Their cells contain chloroplasts. Chloroplasts are cell parts where photosynthesis occurs. Their chloroplasts often contain chlorophyll, which is green. Chlorophyll captures energy from sunlight to power photosynthesis. They use the sugars they make during photosynthesis as food. This food provides the organisms with the energy they need to live.
This organism is photosynthetic: The text tells you that avocado trees make sugars from carbon dioxide and water, and then use these sugars for food. This is evidence that the avocado tree is a photosynthetic organism. This organism is not photosynthetic: The text does not provide evidence that the turkey is photosynthetic.
Is the following trait inherited or acquired? Malia has a scar on her left knee.
[ "inherited", "acquired" ]
1
Hint: Most scars are caused by accidents during a person's life.
closed choice
grade3
natural science
biology
Heredity
Identify inherited and acquired traits
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.
Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait.
What is the volume of a bottle of cough syrup?
[ "9 gallons", "9 cups", "9 fluid ounces" ]
2
Select the best estimate.
closed choice
grade5
natural science
units-and-measurement
Units and measurement
Choose customary units of volume
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Volume is a measurement of how much space something takes up. There are many different units of volume. When you are using customary units, volume may be written in units of fluid ounces, cups, or gallons. As the diagram shows, there are 8 fluid ounces in 1 cup and 16 cups in 1 gallon. So, 1 fluid ounce is less than 1 cup and much less than 1 gallon. A glass of milk has a volume of about 8 fluid ounces, or 1 cup. A jug of milk has a volume of 1 gallon.
The best estimate for the volume of a bottle of cough syrup is 9 fluid ounces. 9 cups and 9 gallons are both too much.
Based on this information, what is Sarah's genotype for the Marfan syndrome gene?
[ "having Marfan syndrome", "MM" ]
1
This passage describes the Marfan syndrome trait in humans: In a group of humans, some individuals have Marfan syndrome and others do not. In this group, the gene for the Marfan syndrome trait has two alleles. The allele M is for having Marfan syndrome, and the allele m is for not having Marfan syndrome. Sarah, a human from this group, has Marfan syndrome. Sarah has two alleles for having Marfan syndrome.
closed choice
grade8
natural science
biology
Genes to traits
Genetics vocabulary: genotype and phenotype
All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different alleles, or forms, that can cause different versions of a trait. For example, flower color is a trait in pea plants. The gene for this trait has two possible alleles. Each allele is represented by an uppercase or lowercase letter. The allele F is for purple flowers, and the allele f is for white flowers. Each pea plant has two alleles for the flower color gene—one allele inherited from each parent. An organism's genotype for a gene is its combination of alleles for that gene. So, a pea plant may have a genotype of FF, Ff, or ff for the flower color gene. An organism's phenotype for a trait is its observable version of that trait, which depends on the organism's combination of alleles. A pea plant may have a phenotype of purple flowers or white flowers for the flower color trait.
An organism's genotype for a gene is its combination of alleles for that gene. Sarah has two alleles for having Marfan syndrome (M). So, Sarah's genotype for the Marfan syndrome gene is MM.
Which logical fallacy is used in the text? This herbal supplement is made from a plant that grows in Zambia. It must be healthier than taking that medication, which is full of chemicals I can't pronounce.
[ "hasty generalization: a very broad claim based on very little evidence", "appeal to nature: the assumption that natural things are always good" ]
1
closed choice
grade6
language science
writing-strategies
Developing and supporting arguments
Classify logical fallacies
A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions. A logical fallacy may present irrelevant information: Fallacy | Description ad hominem | a personal attack meant to discredit one's opponent appeal to nature | an argument that assumes the natural choice is always the best choice bandwagon fallacy | an argument that assumes the popular choice is always the best choice circular reasoning | an argument that supports a claim with the claim itself guilt by association | an unfair negative association with another person or group that is intended to discredit someone or something red herring | the use of a completely unrelated topic in support of a claim A logical fallacy may misrepresent the issues at hand: Fallacy | Description false causation | the assumption that because two things happened together, one caused the other false dichotomy | an argument that presents only two choices when more options exist hasty generalization | a very broad claim based on very little evidence straw man | a misrepresentation of an opponent's position that makes it easier to argue against
The text argues that an herbal supplement is healthier than a medication, because the supplement is made from a plant. However, even though something is made from a plant, that doesn't necessarily mean that it is healthy. This illustrates a type of logical fallacy known as an appeal to nature.
What kind of sentence is this? Kiera felt intimidated by the steep cliff that she faced on her first rock-climbing adventure.
[ "declarative", "exclamatory", "interrogative" ]
0
closed choice
grade10
language science
punctuation
Sentences, fragments, and run-ons
Is the sentence declarative, interrogative, imperative, or exclamatory?
There are four kinds of sentences. A declarative sentence is a statement and always ends with a period. The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure. An imperative sentence makes a request or a demand and usually ends with a period. If a demand shows strong feeling, it can end with an exclamation point. For this assignment, use references to support your claims. Don't drive so quickly in the construction zone! An interrogative sentence asks a question and always ends with a question mark. Given the recent critiques of her new strategic plan, do you think the CEO will reconsider the company's direction? An exclamatory sentence is a statement that shows surprise or strong feeling. An exclamation always ends with an exclamation point. I can't wait to travel through Europe this summer!
The sentence is a statement and ends with a period. It is a declarative sentence.
Which tense does the sentence use? Kelly and Sarah win the game every time.
[ "past tense", "present tense", "future tense" ]
1
closed choice
grade2
language science
verbs
Verb tense
Is the sentence in the past, present, or future tense?
Present tense verbs tell you about something that is happening now. Most present-tense verbs are regular. They have no ending, or they end in -s or -es. Two verbs are irregular in the present tense, to be and to have. You must remember their forms. Past tense verbs tell you about something that has already happened. Most past-tense verbs are regular. They end in -ed. Some verbs are irregular in the past tense. You must remember their past-tense forms. Future tense verbs tell you about something that is going to happen. All future-tense verbs use the word will. Present | Past | Future walk, walks | walked | will walk go, goes | went | will go
The sentence is in present tense. You can tell because it uses a present-tense verb, win. The verb tells you about something that is true or happening now.
Which tense does the sentence use? In the darkness, Samantha strained her eyes.
[ "future tense", "present tense", "past tense" ]
2
closed choice
grade4
language science
verbs
Verb tense
Is the sentence in the past, present, or future tense?
Present tense verbs tell you about something that is happening now. Most present-tense verbs are regular. They have no ending, or they end in -s or -es. Two verbs are irregular in the present tense, to be and to have. You must remember their forms. Past tense verbs tell you about something that has already happened. Most past-tense verbs are regular. They end in -ed. Some verbs are irregular in the past tense. You must remember their past-tense forms. Future tense verbs tell you about something that is going to happen. All future-tense verbs use the word will. Present | Past | Future walk, walks | walked | will walk go, goes | went | will go
The sentence is in past tense. You can tell because it uses a past-tense verb, strained. The verb ends in -ed and tells you about something that has already happened.
Complete the statement. Ethane is ().
[ "an elementary substance", "a compound" ]
1
Ethane is used to make plastic bags. The chemical formula for ethane is C2H6.
closed choice
grade6
natural science
chemistry
Atoms and molecules
Classify elementary substances and compounds using chemical formulas
There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you. A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are composed of multiple chemical elements bonded together are compounds. Every chemical element is represented by its own atomic symbol. An atomic symbol may consist of one capital letter, or it may consist of a capital letter followed by a lowercase letter. For example, the atomic symbol for the chemical element fluorine is F, and the atomic symbol for the chemical element beryllium is Be. The atomic symbol for each chemical element in a substance is shown in the substance's chemical formula. An elementary substance is represented by a chemical formula that contains only one atomic symbol. The atomic symbol in a chemical formula may be followed by a small number written lower than the symbol. This number is called a subscript. A subscript is included when the atoms in the elementary substance are bonded to form molecules. The subscript shows how many atoms are in each molecule. For example, the chemical formula for the elementary substance oxygen, O2, has a subscript of 2. This subscript shows that the atomic symbol O represents two atoms. The elementary substance O2 and the chemical element represented by the atomic symbol O are both named oxygen. So, the formula tells you that each molecule of O2 contains two oxygen atoms. A compound is represented by a chemical formula that contains multiple atomic symbols. The chemical elements in a compound are bonded together in a fixed ratio. This ratio is shown in a compound's chemical formula. For example, in the compound beryllium fluoride, there is one beryllium atom for every two fluorine atoms. So, the ratio of beryllium atoms to fluorine atoms is 1 to 2. This ratio is shown in the chemical formula for beryllium fluoride, BeF2. There is no subscript following the atomic symbol Be because that symbol represents one atom. The subscript 2 follows the atomic symbol F to show that the symbol represents two atoms.
You can tell whether ethane is an elementary substance or a compound by counting the number of atomic symbols in its chemical formula. An atomic symbol consists of either one capital letter or a capital letter followed by one or two lowercase letters. The chemical formula for ethane, C2 H6, contains two atomic symbols: C for carbon and H for hydrogen. So, the formula tells you that ethane is composed of two chemical elements bonded together. Since ethane is composed of multiple chemical elements bonded together, ethane is a compound.
What do these two changes have in common? dust settling out of the air a puddle freezing into ice on a cold night
[ "Both are caused by cooling.", "Both are only physical changes.", "Both are chemical changes.", "Both are caused by heating." ]
1
closed choice
grade7
natural science
chemistry
Chemical reactions
Compare physical and chemical changes
Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule. In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter before and after a chemical change are always different. Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change caused by heating. As paper burns, paper molecules react with oxygen molecules in the air. This reaction breaks the chemical bonds in the molecules. The atoms then link together in a different way to form different molecules. For example, carbon dioxide molecules are formed when paper burns. In a physical change, chemical bonds do not break. The types of molecules in matter before and after a physical change are always the same. A change of state is a type of physical change. Changes of state can be caused by heating or cooling. For example, water vaporizing is a physical change that can be caused by heating. Liquid water and water vapor are made of the same type of matter: water. The law of conservation of mass says that all physical and chemical changes conserve mass. Conserve means to keep the same. So, the total mass before a physical or chemical change is equal to the total mass after the change.
Step 1: Think about each change. Dust settling out of the air is a physical change. As the dust settles, or falls, it might land on furniture or the ground. This separates dust particles from the air, but does not form a different type of matter. A puddle freezing into ice on a cold night is a change of state. So, it is a physical change. Liquid water freezes and becomes solid, but it is still made of water. A different type of matter is not formed. Step 2: Look at each answer choice. Both are only physical changes. Both changes are physical changes. No new matter is created. Both are chemical changes. Both changes are physical changes. They are not chemical changes. Both are caused by heating. Neither change is caused by heating. Both are caused by cooling. A puddle freezing is caused by cooling. But dust settling out of the air is not.
Which of the following contains a vague pronoun reference?
[ "Annie had witnessed a crime, so she made a call to report it. They promptly dispatched police to investigate the scene.", "Annie had witnessed a crime, so she made a call to report it. The operator promptly dispatched police to investigate the scene." ]
0
closed choice
grade11
language science
writing-strategies
Pronouns
Identify vague pronoun references
When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent. When Lisa and Kim finally landed, she breathed a sigh of relief. The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear. Vague pronoun references can be corrected in one of two ways: 1. Replace the pronoun with its correct antecedent: When Lisa and Kim finally landed, Lisa breathed a sigh of relief. 2. Rewrite the sentence: Lisa breathed a sigh of relief when she and Kim finally landed. A vague pronoun reference also occurs when they, them, their, theirs, it, or its is used without its antecedent. They say that this nail polish dries in less than five minutes. The pronoun they is used without its antecedent, so the meaning of the sentence is unclear. This problem can be fixed by replacing the pronoun with its missing antecedent. The advertisements say that this nail polish dries in less than five minutes.
The first answer choice contains a vague pronoun reference. The pronoun they is used without its antecedent. The second answer choice shows a possible correction for the vague pronoun reference. They has been replaced with the operator. Annie had witnessed a crime, so she made a call to report it. The operator promptly dispatched police to investigate the scene.
Select the invertebrate.
[ "Tasmanian devil", "green sea turtle", "turkey vulture", "praying mantis" ]
3
Hint: Insects, spiders, and worms are invertebrates.
closed choice
grade5
natural science
biology
Classification
Identify vertebrates and invertebrates
Vertebrates and invertebrates are both groups of animals. A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange. An invertebrate does not have a backbone. In fact, invertebrates do not have any bones! Some invertebrates have an outer cover on their body called an exoskeleton. Other invertebrates have a soft body.
A Tasmanian devil is a mammal. Like other mammals, a Tasmanian devil is a vertebrate. It has a backbone. A green sea turtle is a reptile. Like other reptiles, a green sea turtle is a vertebrate. It has a backbone. A praying mantis is an insect. Like other insects, a praying mantis is an invertebrate. It does not have a backbone. It has an exoskeleton. A turkey vulture is a bird. Like other birds, a turkey vulture is a vertebrate. It has a backbone.
Would you find the word wee on a dictionary page with the following guide words? wail - wizard
[ "yes", "no" ]
0
yes or no
grade6
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since wee is between the guide words wail - wizard, it would be found on that page.
Would you find the word got on a dictionary page with the following guide words? girl - gnaw
[ "no", "yes" ]
0
yes or no
grade7
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since got is not between the guide words girl - gnaw, it would not be found on that page.
According to Newton's third law, what other force must be happening?
[ "The wheelchair is pushing on Lee.", "The wheelchair is pulling on Lee." ]
0
Isaac Newton was born in the 1600s and studied how objects move. He discovered three fundamental laws about forces and motion. According to Newton's third law, for every force, there is an equal and opposite force. Consider the following force: Lee is pushing on his friend's wheelchair.
closed choice
grade8
natural science
physics
Velocity, acceleration, and forces
Predict forces using Newton's third law
According to Newton's third law, for every force, there is an equal and opposite force. This means that if one object is applying a force on a second object, the second object must also be applying a force on the first object, but in the opposite direction. For example, if your hand is pushing down on a table, the table is also pushing up on your hand. Or, if you are pulling forward on a rope, the rope is also pulling back on you.
Lee is pushing on the wheelchair. So, Newton's third law tells you that the wheelchair is pushing on Lee.
Which text uses the word random in its traditional sense?
[ "Alana made a random trip to the grocery store, though her kitchen was already stocked with a hodgepodge of food.", "At the grocery store, Alana hastily grabbed fruits and vegetables at random, filling her shopping cart with a hodgepodge of food." ]
1
closed choice
grade10
language science
writing-strategies
Word usage and nuance
Explore words with new or contested usages
Words change in meaning when speakers begin using them in new ways. For example, the word peruse once only meant to examine in detail, but it's now also commonly used to mean to look through in a casual manner. When a word changes in meaning, its correct usage is often debated. Although a newer sense of the word may be more commonly used, many people consider a word's traditional definition to be the correct usage. Being able to distinguish the different uses of a word can help you use it appropriately for different audiences. Britney perused her notes, carefully preparing for her exam. The traditional usage above is considered more standard. David perused the magazine, absentmindedly flipping through the pages. The nontraditional usage above is now commonly used, but traditional style guides generally advise against it.
The first text uses random in its traditional sense: made or occurring without a definite pattern. At the grocery store, Alana hastily grabbed fruits and vegetables at random, filling her shopping cart with a hodgepodge of food. The second text uses random in its nontraditional sense: odd or out of place. Alana made a random trip to the grocery store, though her kitchen was already stocked with a hodgepodge of food. Most style guides recommend to avoid using the nontraditional sense of the word random because it is generally considered incorrect.
What is the source of the allusion in the sentence below? Louanne's Ice Cream Parlor has the best dessert short of ambrosia!
[ "modern history", "Greek mythology" ]
1
closed choice
grade10
language science
figurative-language
Literary devices
Recall the source of an allusion
An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words. "I'd better get home before I turn into a pumpkin!" Lila remarked. Here, Lila alludes to the fairy tale "Cinderella," in which Cinderella must leave the ball before the coach that brought her transforms into a pumpkin. The allusion shows that Lila must depart immediately.
The source of the allusion ambrosia is Greek mythology. In Greek mythology, ambrosia is the name for the food of the gods. The allusion ambrosia means a heavenly delicacy.
What is the source of the allusion in the sentence below? Carter's Falstaffian nature makes him stand out at a party.
[ "Greek mythology", "Shakespeare" ]
1
closed choice
grade10
language science
figurative-language
Literary devices
Recall the source of an allusion
An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words. "I'd better get home before I turn into a pumpkin!" Lila remarked. Here, Lila alludes to the fairy tale "Cinderella," in which Cinderella must leave the ball before the coach that brought her transforms into a pumpkin. The allusion shows that Lila must depart immediately.
The source of the allusion Falstaffian is Shakespeare. Sir John Falstaff, a comical character in several of William Shakespeare's plays, is known for his cheerful sociability and sometimes off-color humor. The allusion Falstaffian means characterized by joviality and enjoyment of food and drink.
Which sentence states a fact?
[ "Sheryl Swoopes was named to the Basketball Hall of Fame Class of 2016 along with Shaquille O'Neal.", "Sheryl Swoopes was the best basketball player at the 1996 Olympic Games in Atlanta, Georgia." ]
0
closed choice
grade6
language science
writing-strategies
Developing and supporting arguments
Distinguish facts from opinions
A fact is something that can be proved by research or observation. Napoleon Bonaparte was shorter than King Louis XVI. The statement above is a fact. The statement can be proved by researching the height of each man and comparing them. An opinion is something that a person believes, thinks, or feels. An opinion cannot be proved. Napoleon Bonaparte was a better leader than King Louis XVI. The statement above is an opinion. People can have different ideas about what makes someone a "better" leader, so the statement cannot be proved.
The first sentence states a fact. Sheryl Swoopes was named to the Basketball Hall of Fame Class of 2016 along with Shaquille O'Neal. It can be proved by consulting the Basketball Hall of Fame website. The second sentence states an opinion. Sheryl Swoopes was the best basketball player at the 1996 Olympic Games in Atlanta, Georgia. Best shows what a person believes, thinks, or feels. Another person might have a different opinion about what makes a person the best basketball player.
Select the one animal that has all of the bird traits listed above.
[ "Green violetears are a type of hummingbird. Hummingbirds can use their wings to fly backward and upside-down! Green violetears also have a beak and feathers. Their eggs have shells and are the size of jellybeans.", "Cobras hatch from eggs with shells. They have a wide, flat hood. A cobra can display its hood to scare away a predator. Like the rest of its body, the hood is covered in waterproof scales." ]
0
Birds are a group of animals with similar traits. The following traits can be used to identify birds: They have feathers. They have wings. They have a beak. They make eggs with shells. Observe the animals and read the descriptions.
closed choice
grade4
natural science
biology
Classification
Use evidence to classify mammals, birds, fish, reptiles, and amphibians
Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live. How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, scientists compare the animal's traits to other animals' traits. Scientists classify animals with similar traits into a group.
To decide if an animal is part of a group, look at the traits of the group. Birds have the following traits: They have feathers. They have wings. They have a beak. They make eggs with shells. Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits. A green violetear has the following traits: It has feathers. It has wings. It has a beak. It makes eggs with shells. A green violetear has the traits of a bird. A green violetear is a bird. A cobra has the following traits: It has scaly, waterproof skin. It makes eggs with shells. A cobra does not have all of the traits of a bird. A cobra is a reptile.
Which type of sentence is this? As cold weather approaches, you must protect your water pipes against freezing, or they can rupture and cause significant damage to your home.
[ "complex", "compound-complex", "compound", "simple" ]
1
closed choice
grade10
language science
grammar
Phrases and clauses
Is the sentence simple, compound, complex, or compound-complex?
A clause is a group of words that contains both a subject and a predicate. An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence. the oranges on our tree are ripe The clause can stand alone. It is independent. after we pick up Kevin from work The clause cannot stand alone. It is dependent. A simple sentence is made up of a single independent clause. Ben and I spent all day relaxing by the pool. Some simple sentences have introductory phrases, but the introductory phrase is part of the predicate. In the winter, Ben usually wears his heavy coat. Ben usually wears his heavy coat in the winter. A compound sentence is made up of two independent clauses joined by a coordinating conjunction such as and, but, or, or so. We saw the flash of lightning, and seconds later we heard a rumble of thunder. A complex sentence is made up of an independent clause and a dependent clause. The dependent clause in a complex sentence usually begins with a subordinating conjunction or relative pronoun. Subordinating conjunctions include after, although, as, because, before, if, since, unless, until, when, and while. Relative pronouns include that, which, who, whom, or whose. If she ever gets the chance, Terri would love to visit the Egyptian pyramids. During his trip to Italy, Tony visited the Trevi Fountain, which is in Rome. A compound-complex sentence is made up of two or more independent clauses and one or more dependent clauses. After Samantha left work, she stopped at the bank, and then she went to the gym. Sometimes a dependent clause in a complex or compound-complex sentence can interrupt an independent clause. Orcas that are kept in captivity often have bent dorsal fins.
The sentence is compound-complex. It is made up of two independent clauses and a dependent clause. The dependent clause begins with the subordinating conjunction as. As cold weather approaches, you must protect your water pipes against freezing, or they can rupture and cause significant damage to your home.
Complete the statement. Rubidium chloride is ().
[ "an elementary substance", "a compound" ]
1
Rubidium chloride is used in medical research. The chemical formula for rubidium chloride is RbCl.
closed choice
grade7
natural science
chemistry
Atoms and molecules
Classify elementary substances and compounds using chemical formulas
There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you. A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are composed of multiple chemical elements bonded together are compounds. Every chemical element is represented by its own atomic symbol. An atomic symbol may consist of one capital letter, or it may consist of a capital letter followed by a lowercase letter. For example, the atomic symbol for the chemical element fluorine is F, and the atomic symbol for the chemical element beryllium is Be. The atomic symbol for each chemical element in a substance is shown in the substance's chemical formula. An elementary substance is represented by a chemical formula that contains only one atomic symbol. The atomic symbol in a chemical formula may be followed by a small number written lower than the symbol. This number is called a subscript. A subscript is included when the atoms in the elementary substance are bonded to form molecules. The subscript shows how many atoms are in each molecule. For example, the chemical formula for the elementary substance oxygen, O2, has a subscript of 2. This subscript shows that the atomic symbol O represents two atoms. The elementary substance O2 and the chemical element represented by the atomic symbol O are both named oxygen. So, the formula tells you that each molecule of O2 contains two oxygen atoms. A compound is represented by a chemical formula that contains multiple atomic symbols. The chemical elements in a compound are bonded together in a fixed ratio. This ratio is shown in a compound's chemical formula. For example, in the compound beryllium fluoride, there is one beryllium atom for every two fluorine atoms. So, the ratio of beryllium atoms to fluorine atoms is 1 to 2. This ratio is shown in the chemical formula for beryllium fluoride, BeF2. There is no subscript following the atomic symbol Be because that symbol represents one atom. The subscript 2 follows the atomic symbol F to show that the symbol represents two atoms.
You can tell whether rubidium chloride is an elementary substance or a compound by counting the number of atomic symbols in its chemical formula. An atomic symbol consists of either one capital letter or a capital letter followed by one or two lowercase letters. The chemical formula for rubidium chloride, RbCl, contains two atomic symbols: Rb for rubidium and Cl for chlorine. So, the formula tells you that rubidium chloride is composed of two chemical elements bonded together. Since rubidium chloride is composed of multiple chemical elements bonded together, rubidium chloride is a compound.
Does this passage describe the weather or the climate? It is 65°F in Ivan's backyard.
[ "weather", "climate" ]
0
Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place.
closed choice
grade4
natural science
earth-science
Weather and climate
What's the difference between weather and climate?
The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere. Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day. Climate is the pattern of weather in a certain place. For example, summer temperatures in New York are usually higher than winter temperatures.
Read the text carefully. It is 65°F in Ivan's backyard. This passage tells you about the temperature in Ivan's backyard right now. It describes the atmosphere at a certain place and time. So, this passage describes the weather.
Which word would you find on a dictionary page with the following guide words? impose - issue
[ "ill", "increase" ]
1
closed choice
grade6
language science
reference-skills
Reference skills
Use guide words
Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second letters. If the second letters are the same, look at the third letters, and so on. If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order. For example, be comes before bed.
Put the words in alphabetical order. Since increase is between the guide words impose - issue, it would be found on that page.
What does the metaphor in this text suggest? When Owen lost his job, he was devastated. The only light in the sea of darkness was the prospect of pursuing a new career.
[ "Owen felt in the dark about what to do after losing his job.", "There was a benefit to Owen's job loss." ]
1
closed choice
grade12
language science
figurative-language
Literary devices
Interpret the figure of speech
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. A metaphor compares two things that are not actually alike without using like or as. The snow formed a blanket over the town.
The text uses a metaphor, comparing two things that are not actually alike without using like or as. The metaphor the only light in the sea of darkness was the prospect of pursuing a new career suggests that there was a benefit to Owen's job loss. A light would be beneficial in helping someone escape a dark, difficult-to-navigate situation. Similarly, Owen's new career was beneficial in helping him escape the emotionally difficult experience of losing his job.
What information supports the conclusion that Hugo inherited this trait?
[ "Hugo's biological parents have wavy hair.", "Hugo's biological mother has long hair. Hugo also has long hair.", "Hugo uses a headband to keep his wavy hair out of his face." ]
0
Read the description of a trait. Hugo has wavy hair.
closed choice
grade7
natural science
biology
Genes to traits
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits. Offspring receive their genes, and therefore gain their inherited traits, from their biological parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Parents do not pass acquired traits down to their offspring.
How long is a soccer field?
[ "360 miles", "360 inches", "360 yards", "360 feet" ]
3
Select the best estimate.
closed choice
grade8
natural science
units-and-measurement
Units and measurement
Choose customary units of distance, mass, and volume
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. When you are using customary units, length may be written with units of inches, feet, yards, or miles. There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile. A football is about 1 foot long. A football field is 100 yards long.
The best estimate for the length of a soccer field is 360 feet. 360 inches is too short. 360 yards and 360 miles are too long.
Which word is not like the others?
[ "piano", "horn", "noise", "drum" ]
2
closed choice
grade2
language science
vocabulary
Categories
Which word is not like the others?
Some words are alike. They go together in a group. Red, blue, and green go together. They are colors. Mom, dad, grandma, and grandpa go together. They are people in a family.
Horn, drum, and piano go together. They are instruments. Noise is not an instrument, so it is not like the other words.
What do these two changes have in common? a rock heating up in a campfire cooking an egg
[ "Both are chemical changes.", "Both are caused by cooling.", "Both are caused by heating.", "Both are only physical changes." ]
2
closed choice
grade3
natural science
chemistry
Physical and chemical change
Compare physical and chemical changes
Chemical changes and physical changes are two common ways matter can change. In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different. Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change caused by heating. When paper gets hot enough, it re­acts with oxygen in the air and burns. The paper and oxygen change into ash and smoke. In a physical change, the type of matter stays the same. The types of matter before and after a physical change are always the same. A change of state is a type of physical change. Changes of state can be caused by heating or cooling. For example, ice melting is a physical change that can be caused by heating. Ice and liquid water are made of the same type of matter: water. The law of conservation of mass says that all physical and chemical changes conserve mass. Conserve means to keep the same. So, the total mass before a physical or chemical change is equal to the total mass after the change.
Step 1: Think about each change. A rock heating up in a campfire is a physical change. The temperature of the rock goes up, but the rock is still made of the same type of matter. Cooking an egg is a chemical change. The heat causes the matter in the egg to change. Cooked eggs and raw eggs are made of different types of matter. Step 2: Look at each answer choice. Both are only physical changes. A rock heating up in a campfire is a physical change. But cooking an egg is not. Both are chemical changes. Cooking an egg is a chemical change. But a rock heating up in a campfire is not. Both are caused by heating. Both changes are caused by heating. Both are caused by cooling. Neither change is caused by cooling.
What information supports the conclusion that Bill inherited this trait?
[ "Bill's mother cuts his hair every month.", "Bill's parents have blond hair. They passed down this trait to Bill." ]
1
Read the description of a trait. Bill has blond hair.
closed choice
grade4
natural science
biology
Traits and heredity
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment.
Select the elementary substance.
[ "cobalt (Co)", "glucose (C6H12O6)", "sulfur dioxide (SO2)" ]
0
closed choice
grade5
natural science
chemistry
Atoms and molecules
Identify elementary substances and compounds using chemical formulas
Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds. Every chemical element is represented by its own symbol. For some elements, the symbol is one capital letter. For other elements, the symbol is one capital letter and one lowercase letter. For example, the symbol for the element fluorine is F, and the symbol for the element beryllium is Be. The symbol for each element in a substance is shown in the substance's chemical formula. An elementary substance is represented by a chemical formula that contains only one symbol. The symbol may be followed by a subscript. A subscript is text that is smaller and placed lower than the normal line of text. A subscript is included when the atoms in the elementary substance are bonded to form molecules. The subscript tells you the number of atoms in each molecule. For example, the chemical formula for the elementary substance oxygen is O2. The formula has a subscript of 2. This subscript tells you that there are two atoms in the molecule represented by this chemical formula. The chemical element represented by the symbol O is also called oxygen. So, the formula O2 tells you that each molecule of O2 contains two oxygen atoms. A compound is represented by a chemical formula that contains multiple symbols. For example, in the compound beryllium fluoride, there is one beryllium atom for every two fluorine atoms. This combination is shown in the compound's chemical formula, BeF2. In the formula, the symbol Be represents one beryllium atom. The symbol F followed by the subscript 2 represents two fluorine atoms.
Look at the chemical formula for each substance, and count the number of symbols in the formula. Then, decide if the substance is an elementary substance. The chemical formula for cobalt contains one symbol: Co. So, cobalt is made of one chemical element. Substances that are made of one chemical element are elementary substances. So, cobalt is an elementary substance. The chemical formula for glucose contains three symbols: C for carbon, H for hydrogen, and O for oxygen. So, glucose is made of three chemical elements bonded together. Substances that are made of two or more chemical elements bonded together are compounds. So, glucose is a compound, not an elementary substance. The chemical formula for sulfur dioxide contains two symbols: S for sulfur and O for oxygen. So, sulfur dioxide is made of two chemical elements bonded together. Substances that are made of two or more chemical elements bonded together are compounds. So, sulfur dioxide is a compound, not an elementary substance.
Which sentence is more formal?
[ "Trisha didn't enter student politics until her junior year.", "Trisha did not enter student politics until her junior year." ]
1
closed choice
grade6
language science
writing-strategies
Author's purpose and tone
Which sentence is more formal?
Formal writing is used for essays, business letters, and reports. The following types of informal language should be avoided in formal writing: Type | Examples slang | cool, awesome idioms | knock your socks off conversational language | gonna, kinda, yeah abbreviated language | ASAP, FYI overly simple or imprecise language | he got some stuff at the store contractions | can't, won't Contractions are not as informal as the other types, but they should be used sparingly in formal writing. Compare the following sentences. The first is informal. The second is formal. Informal: Yeah, ostriches can't fly, but they're awesome runners. Formal: Though ostriches are flightless, they are remarkably adept runners.
The first sentence is less formal. You can tell because it uses a contraction (didn't). The second sentence does not use a contraction, so it is more formal.
What information supports the conclusion that Lauren inherited this trait?
[ "Lauren's parents have red hair. They passed down this trait to Lauren.", "Lauren and her mother both wear their hair in braids." ]
0
Read the description of a trait. Lauren has red hair.
closed choice
grade4
natural science
biology
Traits and heredity
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment.
Which figure of speech is used in this text? "There's nothing I love more than skipping lunch," Mr. Atkinson told the flight attendant when he learned that no food would be available on his cross-country flight.
[ "verbal irony", "personification" ]
0
closed choice
grade7
language science
figurative-language
Literary devices
Classify figures of speech
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Alliteration is the repetition of sounds at the beginning of nearby words. What a lucky little lady you are! An allusion is a brief reference to something or someone well known, often from history or literature. "I'd better get home before I turn into a pumpkin!" Lila remarked. An idiom is an expression that cannot be understood literally. Its meaning must be learned. The assignment was a piece of cake. A simile uses like or as to compare two things that are not actually alike. The cat's fur was as dark as the night. A metaphor compares two things that are not actually alike without using like or as. The snow formed a blanket over the town. Onomatopoeia involves using a word that expresses a sound. The scrambled eggs hit the floor with a splat. Personification is giving human characteristics to nonhuman things. The trees danced in the wind. A pun involves using a word or phrase in a humorous way that suggests more than one meaning. A great new broom is sweeping the nation. Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic. Olivia seems thrilled that her car keeps breaking down. Each breakdown is as enjoyable as a punch to the face.
The text uses verbal irony, which involves saying one thing but implying something very different. Nothing I love more shows verbal irony because Mr. Atkinson is probably upset that there isn't anything to eat.
Which is smoother?
[ "plastic water pitcher", "sandpaper" ]
0
closed choice
grade3
natural science
physics
Materials
Compare properties of materials
Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials. A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. Some examples of properties are shiny, hard, fragile, and stretchy. For example, a shiny material reflects a lot of light. A fragile material breaks when you drop it.
Smooth is a property. A smooth material is not rough or bumpy. Look at each picture, one at a time. Imagine touching the material shown in each picture. Of the choices, the plastic water pitcher is smoother. If you touch the side of a plastic water pitcher, it will not feel rough or bumpy.
Which is stickier?
[ "wood board", "jam" ]
1
closed choice
grade2
natural science
physics
Materials
Compare properties of materials
Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials. A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells.
Sticky is a property. A sticky material can stick to other things. Look at each picture, one at a time. Imagine touching the material shown in each picture. Of the choices, the jam is stickier. If you touch jam, it will stick to you.
Which tense does the sentence use? His dog chased the chipmunk up a tree.
[ "future tense", "past tense", "present tense" ]
1
closed choice
grade2
language science
verbs
Verb tense
Is the sentence in the past, present, or future tense?
Present tense verbs tell you about something that is happening now. Most present-tense verbs are regular. They have no ending, or they end in -s or -es. Two verbs are irregular in the present tense, to be and to have. You must remember their forms. Past tense verbs tell you about something that has already happened. Most past-tense verbs are regular. They end in -ed. Some verbs are irregular in the past tense. You must remember their past-tense forms. Future tense verbs tell you about something that is going to happen. All future-tense verbs use the word will. Present | Past | Future walk, walks | walked | will walk go, goes | went | will go
The sentence is in past tense. You can tell because it uses a past-tense verb, chased. The verb ends in -ed and tells you about something that has already happened.
What information supports the conclusion that Elizabeth acquired this trait?
[ "Elizabeth likes to photograph birds at the zoo.", "Elizabeth was not born knowing how to identify different bird calls. She had to learn this skill." ]
1
Read the description of a trait. Elizabeth is good at identifying birds from their calls.
closed choice
grade5
natural science
biology
Traits and heredity
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment.
Compare the motion of two mountain bikers. Which mountain biker was moving at a lower speed?
[ "a mountain biker who moved 150miles in 10hours", "a mountain biker who moved 170miles in 10hours" ]
0
closed choice
grade2
natural science
physics
Force and motion
Compare the speeds of moving objects
An object's speed tells you how fast the object is moving. Speed depends on both distance and time. Distance tells you how far the object has moved. One unit used to measure distance is the mile. Time tells you how long the object has spent moving. One unit used to measure time is the hour. Think about two objects moving for the same amount of time. The object that is moving slower will go a shorter distance in that time. It is moving at a lower speed.
Look at the distance each mountain biker moved and the time it took to move that distance. One mountain biker moved 150 miles in 10 hours. The other mountain biker moved 170 miles in 10 hours. Notice that each mountain biker spent the same amount of time moving. The mountain biker who moved 150 miles moved a shorter distance in that time. So, that mountain biker must have moved at a lower speed.
What information supports the conclusion that Donald inherited this trait?
[ "Donald's biological father has curly hair.", "Donald's coworker also has curly hair.", "Donald and his biological parents have brown hair." ]
0
Read the description of a trait. Donald has curly hair.
closed choice
grade8
natural science
biology
Genes to traits
Inherited and acquired traits: use evidence to support a statement
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits. Offspring receive their genes, and therefore gain their inherited traits, from their biological parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Parents do not pass acquired traits down to their offspring.
Is the following trait inherited or acquired? Ruth can ride a bicycle.
[ "inherited", "acquired" ]
1
closed choice
grade5
natural science
biology
Traits and heredity
Identify inherited and acquired traits
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.
People are not born knowing how to ride a bicycle. Instead, many people learn how to ride. So, riding a bicycle is an acquired trait.
Which logical fallacy is used in the text? Senator Bowen announced today that she plans to cut funding to early childhood education programs. The last thing we need is a government official who hates children!
[ "bandwagon fallacy: the assumption that the popular choice is automatically correct", "straw man: a misrepresentation of an opponent's position that makes it easier to argue against" ]
1
closed choice
grade6
language science
writing-strategies
Developing and supporting arguments
Classify logical fallacies
A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions. A logical fallacy may present irrelevant information: Fallacy | Description ad hominem | a personal attack meant to discredit one's opponent appeal to nature | an argument that assumes the natural choice is always the best choice bandwagon fallacy | an argument that assumes the popular choice is always the best choice circular reasoning | an argument that supports a claim with the claim itself guilt by association | an unfair negative association with another person or group that is intended to discredit someone or something red herring | the use of a completely unrelated topic in support of a claim A logical fallacy may misrepresent the issues at hand: Fallacy | Description false causation | the assumption that because two things happened together, one caused the other false dichotomy | an argument that presents only two choices when more options exist hasty generalization | a very broad claim based on very little evidence straw man | a misrepresentation of an opponent's position that makes it easier to argue against
The text argues that Senator Bowen hates children, because she wants to cut education funding. However, the fact that Senator Bowen wants to cut education funding doesn't necessarily suggest that she hates children. This illustrates a type of logical fallacy known as a straw man.
Which logical fallacy is used in the text? The thing that makes Jeffrey stand out as a remarkable cellist is that he's a marvelous musician who plays the cello splendidly.
[ "false dichotomy: an argument that presents only two choices when more options exist", "ad hominem: an attack against the person making the argument, rather than the argument itself", "circular reasoning: an argument that supports a claim with the claim itself" ]
2
closed choice
grade10
language science
writing-strategies
Developing and supporting arguments
Classify logical fallacies
A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions. A logical fallacy may present irrelevant information: Fallacy | Description ad hominem | an attack against the person making the argument, rather than the argument itself appeal to nature | an argument that assumes the natural choice is always the best choice bandwagon fallacy | an argument that assumes the popular choice is always the best choice circular reasoning | an argument that supports a claim with the claim itself guilt by association | an unfair negative association with another person or group that is intended to discredit someone or something A logical fallacy may misrepresent the issues at hand: Fallacy | Description false causation | the assumption that because two things happened together, one caused the other false dichotomy | an argument that presents only two choices when more options exist hasty generalization | a broad claim based on too few observations slippery slope fallacy | the false assumption that a small first step will necessarily lead to extreme consequences straw man | a misrepresentation of an opponent's position that makes it easier to argue against
The text argues that Jeffrey is a remarkable cellist because he plays the cello well. However, the "evidence" is just a restatement of the claim itself. This illustrates a type of logical fallacy known as circular reasoning.
How long is a school bus?
[ "15 yards", "15 feet" ]
0
Select the better estimate.
closed choice
grade2
natural science
units-and-measurement
Units and measurement
Choose customary units of distance
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Imagine being told that a pencil is 8 long. You might be thinking, 8 what? Is the pencil 8 inches long? 8 feet? 8 miles? The number 8 on its own does not give you much information about the length of the pencil. That is because the units are missing. Now look at the drawing of the pencil and the ruler. The ruler shows that the units are inches. So, the length of the pencil is 8 inches. There are 12 inches in 1 foot. So, 1 inch is much shorter than 1 foot. There are 3 feet in 1 yard. So, 1 foot is shorter than 1 yard.
The better estimate for the length of a school bus is 15 yards. 15 feet is too short.
Which object has less thermal energy?
[ "a 5-kilogram brick at a temperature of 150°C", "a 5-kilogram brick at a temperature of 155°C" ]
0
The objects are identical except for their temperatures.
closed choice
grade3
natural science
physics
Heat and thermal energy
How is temperature related to thermal energy?
All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy. Temperature measures how hot or cold matter is. If the particles in matter slow down, the temperature goes down. The matter now has both less thermal energy and a lower temperature.
The two bricks have the same mass but different temperatures. Since the 150°C brick is colder than the 155°C brick, it has less thermal energy.
Which figure of speech is used in this text? A vote for me is a vote for change, not a vote for the status quo.
[ "antithesis", "apostrophe" ]
0
closed choice
grade11
language science
figurative-language
Literary devices
Classify the figure of speech: anaphora, antithesis, apostrophe, assonance, chiasmus, understatement
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Anaphora is the repetition of the same word or words at the beginning of several phrases or clauses. We are united. We are powerful. We are winners. Antithesis involves contrasting opposing ideas within a parallel grammatical structure. I want to help, not to hurt. Apostrophe is a direct address to an absent person or a nonhuman entity. Oh, little bird, what makes you sing so beautifully? Assonance is the repetition of a vowel sound in a series of nearby words. Try to light the fire. Chiasmus is an expression in which the second half parallels the first but reverses the order of words. Never let a fool kiss you or a kiss fool you. Understatement involves deliberately representing something as less serious or important than it really is. As you know, it can get a little cold in the Antarctic.
The text uses antithesis, the contrasting of opposing ideas within a parallel grammatical structure. The sentence contrasts two parallel phrases, a vote for change and a vote for the status quo.
Select the one animal that has all of the mammal traits listed above.
[ "Gray tree frogs hatch from eggs without shells. They live underwater when they are tadpoles. They move onto land when they become adults. The moist skin of adult gray tree frogs can be green or gray. The color of their skin helps them hide on rocks or plants.", "African elephants have thin hair covering their body. Female elephants feed their offspring milk. Elephants live in groups called herds. The oldest female in the herd is usually the leader." ]
1
Mammals are a group of animals with similar traits. The following traits can be used to identify mammals: They feed their offspring milk. They have fur or hair. Observe the animals and read the descriptions.
closed choice
grade5
natural science
biology
Classification
Use evidence to classify mammals, birds, fish, reptiles, and amphibians
Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live. How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, scientists compare the animal's traits to other animals' traits. Scientists classify animals with similar traits into a group.
To decide if an animal is part of a group, look at the traits of the group. Mammals have the following traits: They feed their offspring milk. They have fur or hair. Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits. A gray tree frog has the following traits: It spends part of its life in water and part on land. It has moist skin. It makes eggs with no shells. A gray tree frog does not have all of the traits of a mammal. A gray tree frog is an amphibian. An African elephant has the following traits: It feeds its offspring milk. It has hair. An African elephant has the traits of a mammal. An African elephant is a mammal.