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NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_2568 | image | textbook_images/introduction_to_genetics_21629.png | FIGURE 6.10 Skin color darkens when exposed to the sun. | 0.271262 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | DD_0252 | image | teaching_images/lewis_dot_diagrams_9146.png | Water is a transparent common substance that makes up the earth's oceans, lakes, seas, rivers, streams and more. Water is essential for every living thing to replenish and hydrate. The chemical formula for water contains one oxygen atom to two hydrogen atoms. Everything from the earth's crust to the human brain contain great amounts of water. Water on earth is continually being used and then goes through the water cycle to become new and usable again. The water cycle involves evaporation, transpiration, condensation, precipitation and runoff. Even though water does not have any calories or nutritional benefit it is essential to all living forms on earth. Fishing which occurs in salt and fresh type waters yields much food for the world's people. Water even involves exercise for those who like to swim and engage in other sports like water skiing, wakeboarding and so on. | 0.254228 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | DQ_011999 | image | question_images/lewis_dot_diagrams_9149.png | lewis_dot_diagrams_9149.png | 0.254228 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | DQ_011993 | image | question_images/lewis_dot_diagrams_9145.png | lewis_dot_diagrams_9145.png | 0.254228 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | DQ_011963 | image | question_images/lewis_dot_diagrams_9131.png | lewis_dot_diagrams_9131.png | 0.254228 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_4894 | image | textbook_images/states_of_matter_23100.png | FIGURE 1.2 | 0.242798 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_2501 | image | textbook_images/cellular_respiration_21593.png | FIGURE 4.11 Astronaut Chris Hadfield eats a banana aboard the International Space Station. | 0.239542 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | DQ_011973 | image | question_images/lewis_dot_diagrams_9135.png | lewis_dot_diagrams_9135.png | 0.21781 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | DQ_003273 | image | question_images/parts_microscope_7191.png | parts_microscope_7191.png | 0.213145 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | DD_0097 | image | teaching_images/parts_microscope_7187.png | The image below shows the different parts of an Optical microscope. The Optical microscope is a type of microscope which uses visible light and a system of lenses to magnify images of small samples. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century. Basic optical microscopes can be very simple, although there are many complex designs which aim to improve resolution and sample contrast. All modern optical microscopes designed for viewing samples by transmitted light share the same basic components of the light path. In addition, the vast majority of microscopes have the same 'structural' components. The eyepiece, or ocular lens, is a cylinder containing two or more lenses; its function is to bring the image into focus for the eye. The eyepiece is inserted into the top end of the body tube. Eyepieces are interchangeable and many different eyepieces can be inserted with different degrees of magnification. | 0.212175 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_3758 | text | null | Research in physical science can be exciting, but it also has potential dangers. Whether in the lab or in the field, knowing how to stay safe is important. | 0.491255 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_3382 | text | null | Modern science is a way of understanding the physical world, based on observable evidence, reasoning, and repeated testing. That means scientists explain the world based on their own observations. If they develop new ideas about the way the world works, they set up a way to test these new ideas. | 0.465541 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_1499 | text | null | If we were doing a scientific investigation we need to gather the information to test the hypotheses ourselves. We would do this by making observations or running experiments. | 0.458185 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_2134 | text | null | Fingernails and toenails are made of specialized cells that grow out of the epidermis. They too are filled with keratin. The keratin makes them tough and hard. Their job is to protect the ends of the fingers and toes. They also make it easier to feel things with the sensitive fingertips by acting as a counterforce when things are handled. | 0.450798 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_4644 | text | null | Science is more about gaining knowledge than it is about simply having knowledge. Science is a way of learning about the natural world that is based on evidence and logic. In other words, science is a process, not just a body of facts. Through the process of science, our knowledge of the world advances. | 0.449705 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_0186 | text | null | The ocean floor is rich in resources. The resources include both living and nonliving things. | 0.44663 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_2597 | text | null | Scientists have learned a lot about evolution by comparing living organisms. They have compared body parts, embryos, and molecules such as DNA and proteins. | 0.443075 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_3750 | text | null | Doing science often requires calculations. Converting units is just one example. Calculations are also needed to find derived quantities. | 0.43657 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_0956 | text | null | Environmental scientists study the effects people have on their environment, including the landscape, atmosphere, water, and living things. Climate change is part of climatology or environmental science. | 0.43099 |
NDQ_018264 | you can wear open-toed shoes in science lab as long as you wear socks. | null | a. true, b. false | b | T_3749 | text | null | Record keeping is very important in scientific investigations. Follow the tips below to keep good science records. Use a bound laboratory notebook so pages will not be lost. Write in ink for a permanent record. Record the steps of all procedures. Record all measurements and observations. Use drawings as needed. Date all entries, including drawings. | 0.425828 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_4832 | image | textbook_images/scientific_process_23068.png | FIGURE 1.1 | 0.302715 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_4894 | image | textbook_images/states_of_matter_23100.png | FIGURE 1.2 | 0.266105 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_0670 | image | textbook_images/formation_of_minerals_20459.png | FIGURE 3.18 When the water in glass A evaporates, the dissolved mineral particles are left behind. calcite tufa towers form. When the lake level drops, the tufa towers are revealed. | 0.255383 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_1444 | image | textbook_images/mineral_formation_20947.png | FIGURE 1.2 | 0.254604 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_1908 | image | textbook_images/the_scientific_method_21256.png | FIGURE 1.8 Scientific method flow chart | 0.254583 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_3373 | image | textbook_images/scientific_investigation_22127.png | FIGURE 1.1 | 0.254032 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_3271 | image | textbook_images/plant_hormones_22060.png | FIGURE 1.4 | 0.252585 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | DQ_011488 | image | abc_question_images/states_of_matter_19252.png | states_of_matter_19252.png | 0.252524 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_0014 | image | textbook_images/the_nature_of_science_20008.png | FIGURE 1.8 A medical researcher protects herself and her work with a net cap, safety goggles, a mask, and gloves. | 0.250633 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_3740 | image | textbook_images/scientific_investigation_22392.png | FIGURE 2.1 This diagram shows the steps of a scientific investigation. Other arrows could be added to the diagram. Can you think of one? (Hint: Sometimes evidence that does not support one hypothesis may lead to a new hypothesis to investigate.) | 0.247509 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_1499 | text | null | If we were doing a scientific investigation we need to gather the information to test the hypotheses ourselves. We would do this by making observations or running experiments. | 0.737041 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.697554 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_1905 | text | null | Most scientific theories were developed by scientists doing basic scientific research. Like other sciences, life science may be either basic or applied science. | 0.694949 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_4644 | text | null | Science is more about gaining knowledge than it is about simply having knowledge. Science is a way of learning about the natural world that is based on evidence and logic. In other words, science is a process, not just a body of facts. Through the process of science, our knowledge of the world advances. | 0.68169 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_3750 | text | null | Doing science often requires calculations. Converting units is just one example. Calculations are also needed to find derived quantities. | 0.673981 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_4830 | text | null | Investigations are at the heart of science. They are how scientists add to scientific knowledge and gain a better understanding of the world. Scientific investigations produce evidence that helps answer questions. Even if the evidence cannot provide answers, it may still be useful. It may lead to new questions for investigation. As more knowledge is discovered, science advances. | 0.669711 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_4811 | text | null | An experiment is a controlled scientific study of specific variables. A variable is a factor that can take on different values. For example, the speed of an object down a ramp might be one variable, and the steepness of the ramp might be another. | 0.667117 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_0638 | text | null | To understand minerals, we must first understand matter. Matter is the substance that physical objects are made of. | 0.660777 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_3382 | text | null | Modern science is a way of understanding the physical world, based on observable evidence, reasoning, and repeated testing. That means scientists explain the world based on their own observations. If they develop new ideas about the way the world works, they set up a way to test these new ideas. | 0.660239 |
NDQ_018291 | there must be at least two variables in a scientific experiment. | null | a. true, b. false | a | T_4893 | text | null | A given kind of matter has the same chemical makeup and the same chemical properties regardless of its state. Thats because state of matter is a physical property. As a result, when matter changes state, it doesnt become a different kind of substance. For example, water is still water whether it exists as ice, liquid water, or water vapor. | 0.65719 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | DQ_000265 | image | abc_question_images/ocean_waves_19150.png | ocean_waves_19150.png | 0.256171 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | DQ_012201 | image | question_images/optics_reflection_9182.png | optics_reflection_9182.png | 0.245858 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | DD_0245 | image | teaching_images/atomic_mass_number_9009.png | The diagram shows how elements are written in relation to the mass and atomic number. The symbol X stands for the chemical symbol of the element. Two numbers are commonly used to distinguish atoms: atomic number and mass number. The symbol A at the top right of the element symbol refers to the mass number. Mass number is the number of protons plus the number of neutrons in an atom. The symbol Z at the bottom right of the element symbol refers to the atomic number. The atomic number is the number of protons in an atom. This number is unique for atoms of each kind of element. | 0.245396 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | DD_0086 | image | teaching_images/radioactive_decay_8168.png | The diagram below shows the beta decay of carbon 14. The carbon-14 nucleus has a neutron within it change into a proton Then we see both a beta minus particle (an electron with high kinetic energy) and an antineutrino ejected from the nucleus. Carbon 14 has two extra neutrons in its nucleus and that is a higher energy configuration and is a bit unstable, so it can release an electron and have a neutron turn into a proton - forming Nitrogen 14 instead, which is more stable. | 0.244287 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | DQ_012163 | image | abc_question_images/optics_reflection_19182.png | optics_reflection_19182.png | 0.244242 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_4754 | image | textbook_images/properties_of_electromagnetic_waves_23039.png | FIGURE 1.1 | 0.242766 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | DQ_010691 | image | abc_question_images/nuclear_energy_18111.png | nuclear_energy_18111.png | 0.242552 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | DQ_002852 | image | abc_question_images/seasons_10172.png | seasons_10172.png | 0.242278 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | DQ_002737 | image | question_images/radioactive_decay_8180.png | radioactive_decay_8180.png | 0.239911 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_3802 | image | textbook_images/properties_of_electromagnetic_waves_22426.png | FIGURE 21.5 Wavelength and frequency of electromagnetic waves. | 0.238795 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_2604 | text | null | Individuals dont evolve. Their alleles dont change over time. The unit of microevolution is the population. | 0.54508 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_3278 | text | null | What does population growth mean? You can probably guess that it means the number of individuals in a population is increasing. The population growth rate tells you how quickly a population is increasing or decreasing. What determines the population growth rate for a particular population? | 0.535012 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_0698 | text | null | Energy changes form when something happens. But the total amount of energy always stays the same. The Law of Conservation of Energy says that energy cannot be created or destroyed. Scientists observed that energy could change from one form to another. They also observed that the overall amount of energy did not change. | 0.534102 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_4243 | text | null | Some reactions need extra help to occur quickly. They need another substance called a catalyst. A catalyst is a substance that increases the rate of a chemical reaction. A catalyst isnt a reactant, so it isnt changed or used up in the reaction. Therefore, it can catalyze many other reactions. | 0.517359 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_4195 | text | null | Work is the use of force to move an object. It is directly related to both the force applied to the object and the distance the object moves. Work can be calculated with this equation: Work = Force x Distance. | 0.517248 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_4188 | text | null | Calculating acceleration is complicated if both speed and direction are changing or if you want to know acceleration at any given instant in time. However, its relatively easy to calculate average acceleration over a period of time when only speed is changing. Then acceleration is the change in velocity (represented by v) divided by the change in time (represented by t): acceleration = v t | 0.516831 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_2534 | text | null | Both types of reproduction have certain advantages. | 0.51553 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_3750 | text | null | Doing science often requires calculations. Converting units is just one example. Calculations are also needed to find derived quantities. | 0.514457 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_2385 | text | null | Two important concepts associated with the ecosystem are niche and habitat. | 0.51315 |
NDQ_018292 | a variable that is changed by the researcher is called a(n) | null | a. responding variable., b. manipulated variable., c. dependent variable., d. two of the above | b | T_2607 | text | null | What happens when forces of evolution work over a long period of time? The answer is macroevolution. An example is the evolution of a new species. | 0.510857 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | DD_0209 | image | teaching_images/velocity_time_graphs_8213.png | Figure 1 presents different velocity-time graphs. A velocity-time graph shows how an object's velocity or speed changes over time. The y axis represents velocity (v), while the x axis represents time (t). In the graph for constant velocity, the line remains horizontal, showing that the velocity of the object does not change over time. In the graph for constant acceleration, the line slopes upwards, showing that the velocity of the object increases over time. This increase in velocity is called acceleration. In the graph for constant retardation, the line slopes downwards, which means that velocity decreases over time. This decrease is called retardation. Retardation can also be called negative acceleration or deceleration. A moving object can both accelerate and decelerate. In the graph for irregular motion, the line moves up and down. This means that the velocity of object increases and decreases several times. | 0.297448 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_3651 | image | textbook_images/simple_machines_22324.png | FIGURE 16.19 Which class of lever would you use to carry a heavy load, sweep a floor, or pry open a can of paint? | 0.29402 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_4832 | image | textbook_images/scientific_process_23068.png | FIGURE 1.1 | 0.29092 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | DQ_010918 | image | question_images/simple_machines_7559.png | simple_machines_7559.png | 0.288771 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | DQ_010899 | image | abc_question_images/simple_machines_18197.png | simple_machines_18197.png | 0.285269 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | DQ_011488 | image | abc_question_images/states_of_matter_19252.png | states_of_matter_19252.png | 0.285112 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | DQ_000816 | image | abc_question_images/earth_moon_phases_12737.png | earth_moon_phases_12737.png | 0.28479 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_0002 | image | textbook_images/the_nature_of_science_20001.png | FIGURE 1.1 The Scientific Method. | 0.283843 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_2553 | image | textbook_images/mendels_discoveries_21623.png | FIGURE 6.4 Seed color: B = yellow (dominant); b = green (recessive) | 0.28338 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_4341 | image | textbook_images/electric_circuits_22783.png | FIGURE 1.1 | 0.282937 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_4854 | text | null | Examples of machines that increase the distance over which force is applied are leaf rakes and hammers (see Figure which the force is applied, but it reduces the strength of the force. | 0.596358 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_0001 | text | null | The scientific method is a set of steps that help us to answer questions. When we use logical steps and control the number of things that can be changed, we get better answers. As we test our ideas, we may come up with more questions. The basic sequence of steps followed in the scientific method is illustrated in Figure 1.1. | 0.581096 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.578102 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_4811 | text | null | An experiment is a controlled scientific study of specific variables. A variable is a factor that can take on different values. For example, the speed of an object down a ramp might be one variable, and the steepness of the ramp might be another. | 0.575299 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_1797 | text | null | The two types of air pollutants are primary pollutants, which enter the atmosphere directly, and secondary pollutants, which form from a chemical reaction. | 0.563574 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_0698 | text | null | Energy changes form when something happens. But the total amount of energy always stays the same. The Law of Conservation of Energy says that energy cannot be created or destroyed. Scientists observed that energy could change from one form to another. They also observed that the overall amount of energy did not change. | 0.557253 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_4438 | text | null | A combustion engine is a complex machine that burns fuel to produce thermal energy and then uses the thermal energy to do work. There are two types of combustion engines: external and internal. A steam engine is an external combustion engine. | 0.551477 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_0726 | text | null | Nuclear energy is produced by splitting the nucleus of an atom. This releases a huge amount of energy. | 0.550768 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_4823 | text | null | Newtons third law of motion is just one of many scientific laws. A scientific law is a statement describing what always happens under certain conditions. Other examples of laws in physical science include: Newtons first law of motion Newtons second law of motion Newtons law of universal gravitation Law of conservation of mass Law of conservation of energy Law of conservation of momentum | 0.550764 |
NDQ_018297 | examples of controls in the experiment in question 6 include the | null | a. smoothness of the ramp., b. steepness of the ramp., c. size of the car tires., d. all of the above | d | T_2746 | text | null | Like all organisms, bacteria need energy, and they can acquire this energy through a number of different ways. | 0.54939 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_4894 | image | textbook_images/states_of_matter_23100.png | FIGURE 1.2 | 0.309827 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_3271 | image | textbook_images/plant_hormones_22060.png | FIGURE 1.4 | 0.290208 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_3812 | image | textbook_images/the_electromagnetic_spectrum_22433.png | FIGURE 21.12 This sterilizer for laboratory equipment uses ultraviolet light to kill bacteria. | 0.2864 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_0014 | image | textbook_images/the_nature_of_science_20008.png | FIGURE 1.8 A medical researcher protects herself and her work with a net cap, safety goggles, a mask, and gloves. | 0.281793 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_4832 | image | textbook_images/scientific_process_23068.png | FIGURE 1.1 | 0.275854 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | DQ_011367 | image | question_images/circuits_219.png | circuits_219.png | 0.274354 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | DQ_011396 | image | question_images/circuits_669.png | circuits_669.png | 0.272761 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | DQ_011312 | image | question_images/circuits_1571.png | circuits_1571.png | 0.270359 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | DQ_011534 | image | question_images/states_of_matter_9255.png | states_of_matter_9255.png | 0.265328 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | DQ_011490 | image | abc_question_images/states_of_matter_19255.png | states_of_matter_19255.png | 0.263485 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_1499 | text | null | If we were doing a scientific investigation we need to gather the information to test the hypotheses ourselves. We would do this by making observations or running experiments. | 0.725316 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_4644 | text | null | Science is more about gaining knowledge than it is about simply having knowledge. Science is a way of learning about the natural world that is based on evidence and logic. In other words, science is a process, not just a body of facts. Through the process of science, our knowledge of the world advances. | 0.72512 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_2237 | text | null | All known matter can be divided into a little more than 100 different substances called elements. | 0.716141 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_3918 | text | null | Some properties of matter can be measured or observed only when matter undergoes a change to become an entirely different substance. These properties are called chemical properties. They include flammability and reactivity. | 0.709535 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.708369 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_0638 | text | null | To understand minerals, we must first understand matter. Matter is the substance that physical objects are made of. | 0.706514 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_2746 | text | null | Like all organisms, bacteria need energy, and they can acquire this energy through a number of different ways. | 0.69903 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_4830 | text | null | Investigations are at the heart of science. They are how scientists add to scientific knowledge and gain a better understanding of the world. Scientific investigations produce evidence that helps answer questions. Even if the evidence cannot provide answers, it may still be useful. It may lead to new questions for investigation. As more knowledge is discovered, science advances. | 0.698905 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_4893 | text | null | A given kind of matter has the same chemical makeup and the same chemical properties regardless of its state. Thats because state of matter is a physical property. As a result, when matter changes state, it doesnt become a different kind of substance. For example, water is still water whether it exists as ice, liquid water, or water vapor. | 0.693805 |
NDQ_018298 | experiments can be carried out only in a science lab. | null | a. true, b. false | b | T_3801 | text | null | Although all electromagnetic waves travel at the same speed, they may differ in their wavelength and frequency. | 0.692518 |
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