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8,500 | NDQ_003932 | characteristics and origins of life | to learn about the origin of life, scientists do not | null | null | Multiple Choice | a. Perform experiments to recreate the environmental conditions found at that time, b. Create stories from their imaginations, c. Study organisms living in extreme environments, d. Study ancient microorganisms | b |
8,501 | NDQ_003933 | characteristics and origins of life | amino acids are the building blocks of life because they create | null | null | Multiple Choice | a. Proteins, b. Lipids, c. Carbohydrates, d. Sucrose | a |
8,502 | NDQ_003934 | characteristics and origins of life | amino acids are linked together by ionic bonds to form monomers called polypeptides. | null | null | Multiple Choice | a. True, b. False | b |
8,503 | NDQ_003935 | characteristics and origins of life | what did the miller-urey experiment help determine? | null | null | Multiple Choice | a. To see if carbohydrates could originate in an early Earth environment., b. To see if amino acids landed on Earth from outer space., c. To see if amino acids could originate in an early Earth environment., d. To see if hydrogen was the first building block of proteins before amino acids. | c |
8,504 | NDQ_003936 | characteristics and origins of life | in the miller-urey experiment, electric sparks provided the energy that drove the chemical reactions. | null | null | Multiple Choice | a. True, b. False | a |
8,505 | NDQ_003937 | characteristics and origins of life | scientists think that life on earth originated once. | null | null | Multiple Choice | a. True, b. False | b |
8,506 | NDQ_003938 | characteristics and origins of life | proteins are important because they | null | null | Multiple Choice | a. Were the living organisms to originate on Earth., b. Are the most abundant class of biological molecules., c. Are known to have originated in outer space, rather than on Earth., d. All of these. | b |
8,507 | NDQ_003939 | characteristics and origins of life | early amino acids may have originated | null | null | Multiple Choice | a. At hydrothermal vents., b. Deep in the crust., c. Elsewhere in the solar system., d. All of these. | d |
8,508 | NDQ_003940 | characteristics and origins of life | a primary protein structure is a sequence of a chain of amino acids. | null | null | Multiple Choice | a. True, b. False | a |
8,509 | NDQ_003941 | chemical bonding | in chemical bonds, | null | null | Multiple Choice | a. One or more atoms share electrons., b. Ions join together to create atoms., c. Ions join together to create molecules., d. None of these. | c |
8,510 | NDQ_003942 | chemical bonding | an atom that shares one or more electrons with another atom is a(n) | null | null | Multiple Choice | a. Ionic Bond, b. Covalent Bond, c. Hydrogen Bond, d. None of the above | b |
8,511 | NDQ_003943 | chemical bonding | a polar molecule is slightly positive on one side and slightly negative on the other. | null | null | Multiple Choice | a. True, b. False | a |
8,512 | NDQ_003944 | chemical bonding | water is good at dissolving things because it exhibits | null | null | Multiple Choice | a. Ionic bonding, b. Covalent bonding, c. Hydrogen bonding, d. All of the above | c |
8,513 | NDQ_003945 | chemical bonding | table salt is an example of hydrogen bonding in which sodium is positive and chlorine is negative. | null | null | Multiple Choice | a. True, b. False | b |
8,514 | NDQ_003946 | chemical bonding | covalent bonds are weak; it does not take a lot of energy to break them apart. | null | null | Multiple Choice | a. True, b. False | b |
8,515 | NDQ_003947 | chemical bonding | in the compound methane, | null | null | Multiple Choice | a. Carbon gives an electron to each of four hydrogen ions as an example of covalent bonding., b. Carbon gives an electron to each of four hydrogen ions as an example of ionic bonding, c. Carbon shares an electron with each of four hydrogen ions as an example of ionic bonding., d. Carbon shares an electron with each of four hydrogen ions as an example of covalent | d |
8,516 | NDQ_003948 | chemical bonding | when a lithium ion and a fluorine ion combine | null | null | Multiple Choice | a. Lithium donates an electron to fluorine, b. Lithium receives an electron from fluorine, c. Lithium’s positive side and fluorine’s negative side form a hydrogen bond., d. They form a very strong covalent bond. | a |
8,517 | NDQ_003949 | chemical bonding | water forms droplets because a hydrogen bond is a strong bond. | null | null | Multiple Choice | a. True, b. False | b |
8,518 | NDQ_003950 | chemical bonding | elements on the left side of the periodic table are electron donors, while those on the right side are electron acceptors. | null | null | Multiple Choice | a. True, b. False | a |
8,519 | NDQ_003961 | cleaning up groundwater | it is easier and cheaper to clean up groundwater than to prevent it. | null | null | Multiple Choice | a. True, b. False | b |
8,520 | NDQ_003962 | cleaning up groundwater | cleaning an aquifer does no good if you do not also | null | null | Multiple Choice | a. Eliminate the pollution source., b. Stop using the groundwater as a water source., c. Drill test wells., d. All of the above | a |
8,521 | NDQ_003963 | cleaning up groundwater | to do chemical remediation of an acidic pollutant in an aquifer, introduce | null | null | Multiple Choice | a. A safe acidic compound., b. A safe basic compound., c. A safe neutral compound., d. None of the above | b |
8,522 | NDQ_003964 | cleaning up groundwater | this form of remediation involves injecting microorganisms into the contaminant plume and allowing them to consume the pollutant. | null | null | Multiple Choice | a. Chemical remediation, b. Contaminant remediation, c. Pollution remediation, d. Bioremediation | d |
8,523 | NDQ_003965 | cleaning up groundwater | which form of remediation involves pumping a chemical into an aquifer to destroy a contaminant? | null | null | Multiple Choice | a. Bioremediation, b. Chemical remediation, c. Contaminant remediation, d. Pollution remediation | b |
8,524 | NDQ_003966 | cleaning up groundwater | a problem with having to bring toxic materials to the surface to cleanse them is | null | null | Multiple Choice | a. How to re-inject the cleansed rock and soil back into the aquifer., b. Where to do the bioremediation on the toxic materials., c. Where to dispose of the toxic materials., d. None of these. | c |
8,525 | NDQ_003967 | cleaning up groundwater | if you pumped contaminated water from an aquifer, cleaned the water and pumped it back in what would happen? | null | null | Multiple Choice | a. The water would be clean and stay clean., b. The water would clean the aquifer., c. The water would be re-contaminated by the aquifer., d. It’s impossible to know what would happen. | c |
8,526 | NDQ_003968 | cleaning up groundwater | the most dangerous contaminants in water are the ones that are visible. | null | null | Multiple Choice | a. True, b. False | b |
8,527 | NDQ_003969 | cleaning up groundwater | pumping water to the surface to clean the pollutant is more expensive than in situ cleaning methods because the soil and rock must be cleaned too. | null | null | Multiple Choice | a. True, b. False | a |
8,528 | NDQ_003970 | climate change in earth history | throughout earths history, its climate has always been colder and less humid than it is today. | null | null | Multiple Choice | a. True, b. False | b |
8,529 | NDQ_003971 | climate change in earth history | glaciers during the pleistocene | null | null | Multiple Choice | a. Advanced and retreated in cycles., b. There were glacial and interglacial periods., c. Bound up a lot of Earth’s water into ice., d. All of the above. | d |
8,530 | NDQ_003972 | climate change in earth history | the most recent ice age was in the ____________ between __________ years ago. | null | null | Multiple Choice | a. Pleistocene Epoch; 1.8 million and 10,000, b. Pleiocene Epoch; 1 million and 10,000, c. Pleistocene Epoch; 1.8 million and 1 million, d. Pleiocene Epoch; 2 million and 1 million | a |
8,531 | NDQ_003973 | climate change in earth history | the average global temperature during glacial periods was __________ less than current average global temperature. | null | null | Multiple Choice | a. 10.5 oC (18.9oF), b. 5.5 oC (10oF), c. 2.0oC (3.6oF), d. 82 oC (148oF) | b |
8,532 | NDQ_003974 | climate change in earth history | when glaciers retreat, sea level rises. | null | null | Multiple Choice | a. True, b. False | a |
8,533 | NDQ_003975 | climate change in earth history | fairly small changes in temperature can have major effects on global climate. | null | null | Multiple Choice | a. True, b. False | a |
8,534 | NDQ_003976 | climate change in earth history | how is climate stability beneficial to the human civilization? | null | null | Multiple Choice | a. It allows the expansion of agriculture, b. It allows the development of towns and cities, c. It has allowed development along coastlines over the centuries., d. All of the above | d |
8,535 | NDQ_003977 | climate change in earth history | the vikings colonized greenland during this period __________ and were forced out during this period __________. | null | null | Multiple Choice | a. The Little Ice Age; the Medieval Warm Period, b. The Late Ice Age; the Middle Warm Period, c. The Medieval Warm Period; the Little Ice Age, d. The Middle Warm Period; The Late Ice Age | c |
8,536 | NDQ_003978 | climate change in earth history | since the end of the ice ages, temperature had been getting steadily warmer, although not uniformly warmer. | null | null | Multiple Choice | a. True, b. False | a |
8,537 | NDQ_003979 | climate change in earth history | the message of this concept is | null | null | Multiple Choice | a. Climate has changed throughout earth history., b. Human civilization depends on a fairly stable climate., c. Climate in the past 15 centuries or so has been fairly stable., d. All of these. | d |
8,538 | NDQ_003980 | climate zones and biomes | climate zones are | null | null | Multiple Choice | a. The same at similar latitudes, in similar positions on nearly all continents., b. The same across the Northern Hemisphere but not the Southern Hemisphere., c. Different even at similar latitudes and in similar positions., d. Random. | a |
8,539 | NDQ_003981 | climate zones and biomes | biomes are made up of _____________. | null | null | Multiple Choice | a. Climate type, b. Plants, c. Animals, d. All of the above | d |
8,540 | NDQ_003982 | climate zones and biomes | climate zones are classified by | null | null | Multiple Choice | a. The type of vegetation that occurs., b. A climate type and its plants and animals., c. Temperature, amount of precipitation, and time of year of precipitation., d. None of the above. | c |
8,541 | NDQ_003983 | climate zones and biomes | plants that live in the same biome, but on different continents, share the same characteristics. | null | null | Multiple Choice | a. True, b. False | a |
8,542 | NDQ_003984 | climate zones and biomes | dry climates | null | null | Multiple Choice | a. Are arid, but they still have more precipitation than evaporation., b. Have little rainfall, but what comes falls regularly throughout the year., c. Have hot summers and extremely warm winters., d. Are located at around 30o N where air descends in the global circulation cells. | d |
8,543 | NDQ_003985 | climate zones and biomes | the moist subtropical mid-latitude climate zones are found along the coastal areas in the united states. | null | null | Multiple Choice | a. True, b. False | a |
8,544 | NDQ_003987 | climate zones and biomes | most precipitation in the polar climates occurs in the summer. | null | null | Multiple Choice | a. True, b. False | a |
8,545 | NDQ_003988 | climate zones and biomes | microclimates have | null | null | Multiple Choice | a. The same climates as the surrounding region, b. A different climates than the surrounding region, c. A more extreme climate than the surrounding region, d. None of the above | b |
8,546 | NDQ_003989 | climate zones and biomes | which of the following is not a characteristic of continental climates? | null | null | Multiple Choice | a. Winters are cold and stormy., b. Summers are hot., c. They are found at 40oN to 70oN and 40oS to 70oS., d. The average annual temperature is fairly mild. | c |
8,547 | NDQ_004000 | coal power | the solid form of hydrocarbon is __________________. | null | null | Multiple Choice | a. Natural Gas, b. Coal, c. Petroleum, d. Fossil fuel | b |
8,548 | NDQ_004001 | coal power | which of these statements are true about coal? | null | null | Multiple Choice | a. Coal is useful as fuel, b. Coal helps generate electricity, c. Coal is a sedimentary or metamorphic rock, d. All of the above | d |
8,549 | NDQ_004002 | coal power | what is coal made from? | null | null | Multiple Choice | a. Dead plant matter that settled at the bottom of swamps millions of years ago, b. Heated rock from the sun, c. Volcanic Lava, d. None of the above | a |
8,550 | NDQ_004003 | coal power | for coal to form, during burial the organic matter must be kept away from nitrogen. | null | null | Multiple Choice | a. True, b. False | b |
8,551 | NDQ_004004 | coal power | most coal in the united states, and worldwide, is this type | null | null | Multiple Choice | a. Anthracite, b. Bituminous, c. Subbituminous, d. Lignite | b |
8,552 | NDQ_004005 | coal power | anthracite is this type of rock. | null | null | Multiple Choice | a. Sedimentary, b. Igneous, c. Metamorphic, d. All of the above | c |
8,553 | NDQ_004006 | coal power | coal mining exposes this element, which when mixed with air and water makes a highly corrosive chemical. | null | null | Multiple Choice | a. Sulfur, b. Oxygen, c. Carbon, d. Methane | a |
8,554 | NDQ_004007 | coal power | coal formed in ancient swamps especially during this period. | null | null | Multiple Choice | a. Cambrian, b. Precambrian, c. Mesozoic, d. Carboniferous | d |
8,555 | NDQ_004008 | coal power | coal that forms at higher temperatures burns more cleanly. | null | null | Multiple Choice | a. True, b. False | a |
8,556 | NDQ_004009 | coal power | how does burning coal make electricity? | null | null | Multiple Choice | a. Heat boils water to make steam, turns generators, spins turbines, make electricity., b. Creates elements that combine to release radioactive material that spins turbines, turns generators, make electricity., c. Heat boils water to make steam, spins turbines, turns generators, make electricity., d. None of these. | c |
8,557 | NDQ_004011 | coastal pollution | this contaminant gets washed from farms and yards into rivers, causing algae to grow. | null | null | Multiple Choice | a. Toxins, b. Pesticides, c. Fertilizers, d. All of the above | c |
8,558 | NDQ_004012 | coastal pollution | ___________ can become runoff that travels from the land to the ocean where it becomes a marine pollutant. | null | null | Multiple Choice | a. Agricultural waste, b. Industrial waste, c. Municipal waste, d. All of the above | d |
8,559 | NDQ_004013 | coastal pollution | most ocean pollution comes from runoff while the remaining 20% of water pollution comes from __________. | null | null | Multiple Choice | a. Oil spills, b. People dumping wastes directly in water, c. Both a and b, d. None of the above | c |
8,560 | NDQ_004014 | coastal pollution | humans can be affected by ocean pollution when they | null | null | Multiple Choice | a. Eat contaminated fish., b. Swim in contaminated water., c. Engage in ocean sports., d. All of the above. | d |
8,561 | NDQ_004015 | coastal pollution | fertilizers create dead zones when | null | null | Multiple Choice | a. They cause the algae population to explode., b. They cause the fish population to explode., c. They take all the oxygen out of the water., d. None of these. | a |
8,562 | NDQ_004016 | coastal pollution | most ocean pollution comes from land and is found in or near coastal regions. | null | null | Multiple Choice | a. True, b. False | a |
8,563 | NDQ_004017 | coastal pollution | fish are affected by oceanic pollutants, but humans are not affected because they do not live in the ocean. | null | null | Multiple Choice | a. True, b. False | b |
8,564 | NDQ_004018 | coastal pollution | in what ways do fish rely on coastal wetlands? | null | null | Multiple Choice | a. For food, b. To lay their eggs, c. Shelter, d. All of the above | d |
8,565 | NDQ_004019 | coastal pollution | ships at sea treat their wastes and bring their trash back to land for recycling. | null | null | Multiple Choice | a. True, b. False | b |
8,566 | NDQ_004030 | comets | when do comets have tails? | null | null | Multiple Choice | a. When they are close to colliding with an asteroid, b. When they are close to the Sun, c. When stars get in their way, d. When they pass Earth | b |
8,567 | NDQ_004031 | comets | what causes a comets tail to form? | null | null | Multiple Choice | a. Ice from the outer layer of the comet vaporizes and reflects sunlight., b. Nuclear fusion in the comet leaves a trail of radiation., c. The comet lights on fire near the sun and leaves a trail of fiery particles behind it., d. None of these. | a |
8,568 | NDQ_004032 | comets | possibly the most famous comet, halleys, has a period of __________ and will next be seen in __________. | null | null | Multiple Choice | a. 25 years; 2035, b. 50 years; 2053, c. 75 years; 2061, d. 100 years; 2082 | c |
8,569 | NDQ_004033 | comets | where do long-period comets come from? | null | null | Multiple Choice | a. The asteroid belt, b. The Oort cloud, c. The Kuiper belt, d. The comet belt | b |
8,570 | NDQ_004034 | comets | where do short-period comets come from? | null | null | Multiple Choice | a. The asteroid belt, b. The Oort cloud, c. The Kuiper belt, d. The comet belt | c |
8,571 | NDQ_004035 | comets | in the early solar system, comets that struck earth may have brought in | null | null | Multiple Choice | a. Water., b. Microbes., c. Plankton., d. All of the above. | a |
8,572 | NDQ_004036 | comets | comets may be visible with the naked eye | null | null | Multiple Choice | a. During their entire journey around the sun., b. For a short time when they are near the Sun., c. Never., d. None of these. | b |
8,573 | NDQ_004037 | comets | without its tail, a comet looks like a ball of ice. | null | null | Multiple Choice | a. True, b. False | a |
8,574 | NDQ_004038 | comets | the oort cloud is about 50,000-100,000 au from the sun. | null | null | Multiple Choice | a. True, b. False | a |
8,575 | NDQ_004039 | comets | the kuiper belt is home to | null | null | Multiple Choice | a. Short-period comets, b. Asteroids, c. Dwarf planets, d. All of the above | d |
8,576 | NDQ_004050 | conserving water | plant whatever types of plants you like, no matter where you live. | null | null | Multiple Choice | a. True, b. False | b |
8,577 | NDQ_004051 | conserving water | a practical way to conserve water is for farmers to _________. | null | null | Multiple Choice | a. Use drip irrigation, b. Use sprinklers, c. Only plant on flood plains, d. None of the above | a |
8,578 | NDQ_004052 | conserving water | which of these can conserve water in your home? | null | null | Multiple Choice | a. Have low-flow shower heads, b. Have low-flow toilets, c. Turn off the tap when not being used, d. All of the above | d |
8,579 | NDQ_004053 | conserving water | one complication with environmental issues is that | null | null | Multiple Choice | a. Technology keeps improving., b. People keep thinking of new and better ways to get clean drinking water., c. The human population keeps growing., d. None of these. | c |
8,580 | NDQ_004054 | conserving water | at the earth summit in 2002, the plan was to cut in half the number of people without access to safe drinking water by | null | null | Multiple Choice | a. 2015, b. 2020, c. 2025, d. 2030 | a |
8,581 | NDQ_004055 | conserving water | lawns and golf courses conserve water because they trap water within them. | null | null | Multiple Choice | a. True, b. False | b |
8,582 | NDQ_004057 | conserving water | it is better to sweep the sidewalks rather than hosing them down with water. | null | null | Multiple Choice | a. True, b. False | a |
8,583 | NDQ_004058 | conserving water | careful water use can be encouraged by | null | null | Multiple Choice | a. Shutting down the water to houses that use too much., b. Giving a financial incentive for reducing water consumption., c. Not worrying about water use since there is plenty., d. None of these. | b |
8,584 | NDQ_004059 | conserving water | it may not seem like much, but putting water on a toothbrush as needed rather than letting the water flow, makes an impact, especially if lots of people do it. | null | null | Multiple Choice | a. True, b. False | a |
8,585 | NDQ_004060 | continental drift | the coast of south america fits closely to this continent like a puzzle piece. | null | null | Multiple Choice | a. Africa, b. North America, c. Europe, d. Asia | a |
8,586 | NDQ_004061 | continental drift | this scientist introduced the idea of continental drift. | null | null | Multiple Choice | a. Hutton, b. Wegener, c. Galileo, d. Vernes | b |
8,587 | NDQ_004062 | continental drift | which of these statements supports continental drift? | null | null | Multiple Choice | a. Identical fossils found on different continents., b. Continents that fit together like puzzle pieces., c. Identical rocks found on different continents., d. All of the above. | d |
8,588 | NDQ_004063 | continental drift | scientists in the early 20th century thought that land bridges allowed land animals to travel between africa and south america. | null | null | Multiple Choice | a. True, b. False | a |
8,589 | NDQ_004064 | continental drift | fossils of the seed fern glossopteris were easily carried by wind across oceans. | null | null | Multiple Choice | a. True, b. False | b |
8,590 | NDQ_004065 | continental drift | continental drift is the idea that move around on earths surface. | null | null | Multiple Choice | a. True, b. False | a |
8,591 | NDQ_004066 | continental drift | the mountain ranges in the appalachians are similar to mountain ranges in | null | null | Multiple Choice | a. Eastern Europe, b. Eastern Greenland, c. The Himalayas, d. Australia | b |
8,592 | NDQ_004067 | continental drift | which of these is not evidence of continental drift? | null | null | Multiple Choice | a. Rock deposits left by ancient glaciers., b. Mountain ranges that formed together., c. Coral reefs drifted to locations where they could not grow now., d. Glaciers formed in tropical regions in the distant past. | d |
8,593 | NDQ_004068 | continental drift | coal found on land that is now in a cold climate indicates that | null | null | Multiple Choice | a. Coal formed under different conditions in the past., b. Coal can form under many conditions., c. The land the coal is on has moved., d. The land the coal is on is hotter than most continents. | c |
8,594 | NDQ_004069 | continental drift | the reason the hypothesis that mountains cooled in that form from molten material is good is that mountains are the same age. | null | null | Multiple Choice | a. True, b. False | b |
8,595 | NDQ_004070 | coriolis effect | the coriolis effect describes how | null | null | Multiple Choice | a. Earth’s rotation steers the movement of air and water., b. Earth’s rotation goes in different directions in the northern and southern hemisphere., c. How Earth moves beneath and water, causing it to appear that their motion is curved., d. All of the above | c |
8,596 | NDQ_004071 | coriolis effect | if a pilot wants to fly to a city that is 1000 miles due north of his starting city, he must fly | null | null | Multiple Choice | a. Due north., b. North but also east., c. North but also west., d. Due west. | b |
8,597 | NDQ_004072 | coriolis effect | coriolis effect occurs because earth is rotating beneath a moving object. | null | null | Multiple Choice | a. True, b. False | a |
8,598 | NDQ_004073 | coriolis effect | freely moving objects appear to move to the right in the southern hemisphere. | null | null | Multiple Choice | a. True, b. False | b |
8,599 | NDQ_004074 | coriolis effect | you can tell which hemisphere youre in because water in a drain always spirals right in the northern hemisphere and left in the southern hemisphere. | null | null | Multiple Choice | a. True, b. False | b |
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