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NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_1574 | image | textbook_images/predicting_volcanic_eruptions_21043.png | FIGURE 1.1 | 0.301591 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_0953 | image | textbook_images/branches_of_earth_science_20638.png | FIGURE 1.1 | 0.293489 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_0183 | image | textbook_images/the_ocean_floor_20122.png | FIGURE 14.19 Sound waves travel through ocean water, but they bounce off the ocean floor. They move through ocean water at a known speed. Can you use these facts to explain how sonar works? | 0.264095 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_3741 | image | textbook_images/scientific_investigation_22394.png | FIGURE 2.3 This scientist is investigating the effects farming practices have on the water quality. He is collecting and analyzing samples of river water. How might the evidence he gathers in the field help him solve the problem? | 0.260098 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_1810 | image | textbook_images/types_of_marine_organisms_21184.png | FIGURE 1.4 | 0.254732 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_2677 | image | textbook_images/fungi_21686.png | FIGURE 9.7 Examples of fungi | 0.248908 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_1807 | image | textbook_images/types_of_marine_organisms_21181.png | FIGURE 1.1 | 0.248174 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_3271 | image | textbook_images/plant_hormones_22060.png | FIGURE 1.4 | 0.246743 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_3743 | image | textbook_images/scientific_investigation_22396.png | FIGURE 2.5 This scientist is studying lab rats. He keeps them in comfortable cages and provides them with plenty of food and water. | 0.246706 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_1601 | image | textbook_images/protecting_water_from_pollution_21059.png | FIGURE 1.1 | 0.246615 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | 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. | 0.688502 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | 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. | 0.686039 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | 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. | 0.681354 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | 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. | 0.648514 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | 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. | 0.638891 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_1106 | text | null | Despite these problems, there is a rich fossil record. How does an organism become fossilized? | 0.635367 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_1902 | text | null | Each field of life science has its own specific body of knowledge and relevant theories. However, two theories are basic to all of the life sciences. They form the foundation of every life science field. They are the cell theory and the theory of evolution by natural selection. Both theories have been tested repeatedly. Both are supported by a great deal of evidence. | 0.634011 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_2385 | text | null | Two important concepts associated with the ecosystem are niche and habitat. | 0.632231 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | 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. | 0.63064 |
NDQ_014081 | Scientists do field studies to gather real-world evidence. | null | a. true, b. false | a | T_1570 | text | null | Many pieces of evidence can mean that a volcano is about to erupt, but the time and magnitude of the eruption are difficult to pin down. This evidence includes the history of previous volcanic activity, earthquakes, slope deformation, and gas emissions. | 0.628854 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_2368 | image | textbook_images/populations_21521.png | FIGURE 23.4 Curve A represents exponential popula- tion growth. Curve B represents logistic population growth. | 0.281026 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_3142 | image | textbook_images/limiting_factors_to_population_growth_21955.png | FIGURE 1.1 | 0.277451 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_1568 | image | textbook_images/predicting_earthquakes_21042.png | FIGURE 1.2 | 0.27565 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | DQ_002852 | image | abc_question_images/seasons_10172.png | seasons_10172.png | 0.267498 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_3026 | image | textbook_images/human_population_21891.png | FIGURE 1.1 | 0.263795 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_3281 | image | textbook_images/population_growth_patterns_22070.png | FIGURE 1.3 Usually, populations first grow exponentially while resources are abundant. But as populations increase and re- sources become less available, rates of growth slow down and slowly level off, reaching the carrying capacity. The carrying capacity is the upper limit to the population size that the environment can support. This type of growth is shown as an "S-shaped" curve below ( Figure 1.3) and is called logistic growth. Why do you think occurs? | 0.255582 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_4495 | image | textbook_images/heat_22878.png | FIGURE 1.1 | 0.253211 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_4832 | image | textbook_images/scientific_process_23068.png | FIGURE 1.1 | 0.249429 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_0002 | image | textbook_images/the_nature_of_science_20001.png | FIGURE 1.1 The Scientific Method. | 0.248824 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | DQ_010145 | image | abc_question_images/cell_division_16617.png | cell_division_16617.png | 0.244638 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | 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. | 0.565332 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.564187 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | 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. | 0.561739 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | 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. | 0.548789 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | 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. | 0.54843 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_2573 | text | null | A species genome consists of all of its genetic information. The human genome consists of the complete set of genes in the human organism. Its all the DNA of a human being. | 0.547863 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_1825 | text | null | The study of the universe is called cosmology. Cosmologists study the structure and changes in the present universe. The universe contains all of the star systems, galaxies, gas, and dust, plus all the matter and energy that exists now, that existed in the past, and that will exist in the future. The universe includes all of space and time. | 0.535255 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | 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. | 0.534595 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_2604 | text | null | Individuals dont evolve. Their alleles dont change over time. The unit of microevolution is the population. | 0.534 |
NDQ_014085 | controlled scientific study of a limited number of variables | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | c | T_4885 | text | null | How fast or slow something moves is its speed. Speed determines how far something travels in a given amount of time. The SI unit for speed is meters per second (m/s). Speed may be constant, but often it varies from moment to moment. | 0.530807 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | T_2368 | image | textbook_images/populations_21521.png | FIGURE 23.4 Curve A represents exponential popula- tion growth. Curve B represents logistic population growth. | 0.257044 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | T_4909 | image | textbook_images/technological_design_process_23106.png | FIGURE 1.1 | 0.256771 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | T_3763 | image | textbook_images/technology_22404.png | FIGURE 2.13 This flowchart represents the process of technological design. How does the tech- nological design process resemble a sci- entific investigation? | 0.256263 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | T_3142 | image | textbook_images/limiting_factors_to_population_growth_21955.png | FIGURE 1.1 | 0.254616 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | DQ_011137 | image | abc_question_images/parts_telescope_18150.png | parts_telescope_18150.png | 0.254099 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | 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? | 0.25325 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | T_3564 | image | textbook_images/speed_and_velocity_22248.png | FIGURE 12.8 This graph shows how far a bike rider is from her starting point at 7:30 AM until she returned at 12:30 PM. | 0.249932 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | T_3731 | image | textbook_images/wave_interactions_and_interference_22386.png | FIGURE 19.16 Waves strike a wall at an angle, called the angle of incidence. The waves are re- flected at the same angle, called the angle of reflection, but in a different direction. Both angles are measured relative to a line that is perpendicular to the wall. | 0.249625 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | DQ_011479 | image | abc_question_images/states_of_matter_17613.png | states_of_matter_17613.png | 0.247864 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | DQ_012155 | image | abc_question_images/optics_reflection_19179.png | optics_reflection_19179.png | 0.244775 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | 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. | 0.606903 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | 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. | 0.564573 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | 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. | 0.564371 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | 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. | 0.555746 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | 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? | 0.546586 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | 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. | 0.540044 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | T_3762 | text | null | The development of new technology is called technological design. It is similar to scientific investigation. Both processes use evidence and logic to solve problems. | 0.539905 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.533352 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | T_1106 | text | null | Despite these problems, there is a rich fossil record. How does an organism become fossilized? | 0.532371 |
NDQ_014086 | investigation of a problem in a real-world setting | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | d | T_4885 | text | null | How fast or slow something moves is its speed. Speed determines how far something travels in a given amount of time. The SI unit for speed is meters per second (m/s). Speed may be constant, but often it varies from moment to moment. | 0.529135 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | T_4832 | image | textbook_images/scientific_process_23068.png | FIGURE 1.1 | 0.282521 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | DQ_010899 | image | abc_question_images/simple_machines_18197.png | simple_machines_18197.png | 0.267118 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | DQ_011139 | image | abc_question_images/parts_telescope_18151.png | parts_telescope_18151.png | 0.265256 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | DQ_005262 | image | question_images/life_cycles_345.png | life_cycles_345.png | 0.264633 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | DQ_005276 | image | question_images/life_cycles_353.png | life_cycles_353.png | 0.259281 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | DQ_002892 | image | abc_question_images/seasons_12629.png | seasons_12629.png | 0.257294 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | DQ_010926 | image | question_images/simple_machines_8197.png | simple_machines_8197.png | 0.256614 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | DQ_012170 | image | question_images/optics_ray_diagrams_9165.png | optics_ray_diagrams_9165.png | 0.256396 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | T_4695 | image | textbook_images/optical_instruments_23000.png | FIGURE 1.5 | 0.255924 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | T_3844 | image | textbook_images/optics_22457.png | FIGURE 22.22 A laser light uses two concave mirrors to focus photons of colored light. | 0.254644 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | 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. | 0.556556 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | 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. | 0.535351 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.520292 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | T_3801 | text | null | Although all electromagnetic waves travel at the same speed, they may differ in their wavelength and frequency. | 0.516612 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | T_2534 | text | null | Both types of reproduction have certain advantages. | 0.513721 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | T_1661 | text | null | So weve answered the question using data from research that has already been done. If scientists had not been monitoring CO2 levels over the years, wed have had to start these measurements now. Because this question can be answered with data, it is testable. Click image to the left or use the URL below. URL: | 0.512181 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | 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. | 0.507472 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | T_2385 | text | null | Two important concepts associated with the ecosystem are niche and habitat. | 0.498327 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | T_3043 | text | null | The great apes are the members of the biological family Hominidae, which includes four living genera: chimpanzees, gorillas, orangutans and humans. Among these four genera are just seven species, two of each except humans, which has only one species, Homo sapiens. | 0.498187 |
NDQ_014087 | experimental variable that the researcher changes | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | f | 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. | 0.497143 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_3373 | image | textbook_images/scientific_investigation_22127.png | FIGURE 1.1 | 0.283922 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_1908 | image | textbook_images/the_scientific_method_21256.png | FIGURE 1.8 Scientific method flow chart | 0.283858 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_4832 | image | textbook_images/scientific_process_23068.png | FIGURE 1.1 | 0.265694 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_4754 | image | textbook_images/properties_of_electromagnetic_waves_23039.png | FIGURE 1.1 | 0.246118 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_3802 | image | textbook_images/properties_of_electromagnetic_waves_22426.png | FIGURE 21.5 Wavelength and frequency of electromagnetic waves. | 0.245113 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_3667 | image | textbook_images/types_of_energy_22337.png | FIGURE 17.7 Energy continuously changes back and forth between potential and kinetic energy on a swing or trampoline. | 0.243535 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_3622 | image | textbook_images/pressure_of_fluids_22300.png | FIGURE 15.10 How does Bernoullis law explain each of these examples? | 0.243203 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_3653 | image | textbook_images/simple_machines_22325.png | FIGURE 16.20 Both a Ferris wheel and a car steering wheel have an outer wheel and an inner axle. | 0.243138 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | DQ_012163 | image | abc_question_images/optics_reflection_19182.png | optics_reflection_19182.png | 0.24295 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_0002 | image | textbook_images/the_nature_of_science_20001.png | FIGURE 1.1 The Scientific Method. | 0.241483 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | 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. | 0.628833 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | 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. | 0.627674 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_1661 | text | null | So weve answered the question using data from research that has already been done. If scientists had not been monitoring CO2 levels over the years, wed have had to start these measurements now. Because this question can be answered with data, it is testable. Click image to the left or use the URL below. URL: | 0.624633 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.62396 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | 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. | 0.620213 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | 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. | 0.619318 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_1908 | text | null | A life scientist would carry out a scientific investigation to try to answer this question. A scientific investigation follows a general plan called the scientific method. The scientific method is a series of logical steps for testing a possible answer to a question. The steps are shown in the flow chart in Figure 1.8. | 0.616406 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | 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. | 0.613896 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | 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. | 0.609935 |
NDQ_014088 | potential answer to a question that can be tested with evidence | null | a. control, b. ethics, c. experiment, d. field study, e. hypothesis, f. manipulated variable, g. responding variable | e | T_0726 | text | null | Nuclear energy is produced by splitting the nucleus of an atom. This releases a huge amount of energy. | 0.60326 |
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