questionID
stringlengths 9
10
| question_text
stringlengths 5
324
| question_image
stringclasses 660
values | answer_choices
stringlengths 17
476
| correct_answer
stringclasses 7
values | result_id
stringlengths 6
21
| result_type
stringclasses 2
values | result_imagePath
stringlengths 28
76
⌀ | content
stringlengths 10
1.69k
| cosin_sim_score
float64 0.15
1
|
|---|---|---|---|---|---|---|---|---|---|
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_4909 | image | textbook_images/technological_design_process_23106.png | FIGURE 1.1 | 0.313448 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | 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? | 0.312859 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_2538 | image | textbook_images/protein_synthesis_21613.png | FIGURE 5.15 Blueprints for a house | 0.275806 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_4832 | image | textbook_images/scientific_process_23068.png | FIGURE 1.1 | 0.231763 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_4916 | image | textbook_images/technology_careers_23112.png | FIGURE 1.1 | 0.229774 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_4399 | image | textbook_images/electronic_device_22814.png | FIGURE 1.1 | 0.228767 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_3373 | image | textbook_images/scientific_investigation_22127.png | FIGURE 1.1 | 0.226005 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_1908 | image | textbook_images/the_scientific_method_21256.png | FIGURE 1.8 Scientific method flow chart | 0.224406 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_3882 | image | textbook_images/electronics_22483.png | FIGURE 23.22 This illustration shows how the parts of a computer fit together. | 0.22417 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | DQ_011690 | image | question_images/state_change_8165.png | state_change_8165.png | 0.221257 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | 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. | 0.690842 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_2534 | text | null | Both types of reproduction have certain advantages. | 0.578349 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.565203 |
NDQ_014151 | The first step in the technological design process is to create a model. | 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. | 0.563217 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | 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. | 0.562548 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_2385 | text | null | Two important concepts associated with the ecosystem are niche and habitat. | 0.561398 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_0959 | text | null | The short term cycling of carbon begins with carbon dioxide (CO2 ) in the atmosphere. | 0.559884 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_1664 | text | null | Since models are simpler than real objects or systems, they have limitations. A model deals with only a portion of a system. It may not predict the behavior of the real system very accurately. But the more computing power that goes into the model and the care with which the scientists construct the model can increase the chances that a model will be accurate. | 0.559001 |
NDQ_014151 | The first step in the technological design process is to create a model. | null | a. true, b. false | b | T_3708 | text | null | A combustion engine is a complex machine that burns fuel to produce thermal energy and then uses the energy to do work. Two basic types of combustion engines are external and internal combustion engines. | 0.558834 |
NDQ_014151 | The first step in the technological design process is to create a model. | 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. | 0.555876 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | DD_0208 | image | teaching_images/velocity_time_graphs_8216.png | As time increases, distance increases as well. Over time, there is a steady speed and then a straight line indicates a stationary moment in time. It then returns to the start. | 0.228458 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | T_4474 | image | textbook_images/gravity_22864.png | FIGURE 1.1 | 0.223664 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | T_3587 | image | textbook_images/gravity_22269.png | FIGURE 13.16 A scale measures the pull of gravity on an object. | 0.223202 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | T_4916 | image | textbook_images/technology_careers_23112.png | FIGURE 1.1 | 0.217431 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | T_0348 | image | textbook_images/the_human_population_20224.png | FIGURE 18.17 Growth of the human population. Until recently, the human population grew very slowly. | 0.215675 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | DQ_011973 | image | question_images/lewis_dot_diagrams_9135.png | lewis_dot_diagrams_9135.png | 0.215093 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | DQ_010923 | image | question_images/simple_machines_7560.png | simple_machines_7560.png | 0.211337 |
NDQ_014152 | Cost is the only limit on technological design. | 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. | 0.209048 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | DQ_011999 | image | question_images/lewis_dot_diagrams_9149.png | lewis_dot_diagrams_9149.png | 0.209048 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | DQ_011993 | image | question_images/lewis_dot_diagrams_9145.png | lewis_dot_diagrams_9145.png | 0.209048 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | 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. | 0.680517 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | T_0710 | text | null | Coal is a solid hydrocarbon. Coal is useful as a fuel, especially for generating electricity. | 0.60777 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | T_0726 | text | null | Nuclear energy is produced by splitting the nucleus of an atom. This releases a huge amount of energy. | 0.600052 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | T_2534 | text | null | Both types of reproduction have certain advantages. | 0.596188 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | T_0332 | text | null | All living things need energy. They need it to power the processes of life. For example, it takes energy to grow. It also takes energy to produce offspring. In fact, it takes energy just to stay alive. Remember that energy cant be created or destroyed. It can only change form. Energy changes form as it moves through ecosystems. | 0.585517 |
NDQ_014152 | Cost is the only limit on technological design. | 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. | 0.58275 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.581696 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | b | T_2385 | text | null | Two important concepts associated with the ecosystem are niche and habitat. | 0.580545 |
NDQ_014152 | Cost is the only limit on technological design. | 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. | 0.580029 |
NDQ_014152 | Cost is the only limit on technological design. | null | a. true, b. false | 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. | 0.579302 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | T_3507 | image | textbook_images/the_scope_of_physical_science_22209.png | FIGURE 1.6 All these activities involve matter and energy. Can you explain how or why? | 0.214565 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | T_3670 | image | textbook_images/forms_of_energy_22339.png | FIGURE 17.9 Kinetic and potential energy add up to mechanical energy. | 0.214114 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | DQ_011973 | image | question_images/lewis_dot_diagrams_9135.png | lewis_dot_diagrams_9135.png | 0.210434 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | DD_0253 | image | teaching_images/lewis_dot_diagrams_9130.png | this image shows the chemical structure of Acetylene. Acetylene is the chemical compound with the formula C2H2. It is a hydrocarbon and the simplest alkyne. As an alkyne, acetylene is unsaturated because its two carbon atoms are bonded together in a triple bond. The carbonóñcarbon triple bond places all four atoms in the same straight line, with CCH bond angles of 180Á. | 0.210416 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | DQ_011966 | image | question_images/lewis_dot_diagrams_9133.png | lewis_dot_diagrams_9133.png | 0.210343 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | DQ_010888 | image | question_images/velocity_time_graphs_8223.png | velocity_time_graphs_8223.png | 0.206029 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | T_3675 | image | textbook_images/forms_of_energy_22344.png | FIGURE 17.14 Radio waves, microwaves, and X rays are examples of electromagnetic energy. | 0.203198 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | T_4133 | image | textbook_images/artificial_light_22665.png | FIGURE 1.1 | 0.202454 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | DD_0208 | image | teaching_images/velocity_time_graphs_8216.png | As time increases, distance increases as well. Over time, there is a steady speed and then a straight line indicates a stationary moment in time. It then returns to the start. | 0.202029 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | T_4916 | image | textbook_images/technology_careers_23112.png | FIGURE 1.1 | 0.2015 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | 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. | 0.614322 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | T_2579 | text | null | Treating genetic disorders is one use of biotechnology. Biotechnology is the use of technology to change the genetic makeup of living things for human purposes. Its also called genetic engineering. Besides treating genetic disorders, biotechnology is used to change organisms so they are more useful to people. | 0.59018 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | 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. | 0.588664 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | T_0710 | text | null | Coal is a solid hydrocarbon. Coal is useful as a fuel, especially for generating electricity. | 0.577386 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | T_0726 | text | null | Nuclear energy is produced by splitting the nucleus of an atom. This releases a huge amount of energy. | 0.565382 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | T_3871 | text | null | We use electricity for many purposes. Devices such as lights, stoves, and stereos all use electricity and convert it to energy in other forms. However, devices may vary in how quickly they change electricity to other forms of energy. | 0.564922 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | T_3491 | text | null | Vitamins and minerals are also nutrients. They do not provide energy, but they are needed for good health. | 0.564578 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | d | T_3907 | text | null | Two important devices depend on electromagnetic induction: electric generators and electric transformers. Both devices play critical roles in producing and regulating the electric current we depend on in our daily lives. | 0.564263 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | 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. | 0.559914 |
NDQ_014153 | The goal of technology is to | null | a. increase scientific knowledge., b. set the direction that science takes., c. discover new theories., d. solve practical problems. | 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. | 0.558845 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_3507 | image | textbook_images/the_scope_of_physical_science_22209.png | FIGURE 1.6 All these activities involve matter and energy. Can you explain how or why? | 0.248785 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_3670 | image | textbook_images/forms_of_energy_22339.png | FIGURE 17.9 Kinetic and potential energy add up to mechanical energy. | 0.242755 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_4916 | image | textbook_images/technology_careers_23112.png | FIGURE 1.1 | 0.22624 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_1758 | image | textbook_images/testing_hypotheses_21155.png | FIGURE 1.1 Click image to the left or use the URL below. URL: https://www.ck12.org/flx/render/embeddedobject/185963 | 0.217831 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_4909 | image | textbook_images/technological_design_process_23106.png | FIGURE 1.1 | 0.21645 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | 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? | 0.216242 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_3556 | image | textbook_images/distance_and_direction_22242.png | FIGURE 12.2 To a person outside the bus, the buss motion is obvious. To children riding the bus, its motion may not be as obvious. | 0.21402 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_3941 | image | textbook_images/solids_liquids_gases_and_plasmas_22540.png | FIGURE 4.7 Both the northern lights (aurora borealis) and a plasma TV contain matter in the plasma state. What other plasmas are shown in the northern lights picture? | 0.21344 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_4839 | image | textbook_images/scope_of_physical_science_23072.png | FIGURE 1.1 | 0.212729 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_4083 | image | textbook_images/hydrocarbons_22638.png | FIGURE 9.15 These photos show just a few of the many uses of hydrocarbons. | 0.212677 |
NDQ_014155 | Technology and science have the same goals. | 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. | 0.69393 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | 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. | 0.674299 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.653591 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_2534 | text | null | Both types of reproduction have certain advantages. | 0.640176 |
NDQ_014155 | Technology and science have the same goals. | 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. | 0.631091 |
NDQ_014155 | Technology and science have the same goals. | 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. | 0.630901 |
NDQ_014155 | Technology and science have the same goals. | 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. | 0.626615 |
NDQ_014155 | Technology and science have the same goals. | 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. | 0.626391 |
NDQ_014155 | Technology and science have the same goals. | null | a. true, b. false | b | T_3871 | text | null | We use electricity for many purposes. Devices such as lights, stoves, and stereos all use electricity and convert it to energy in other forms. However, devices may vary in how quickly they change electricity to other forms of energy. | 0.626054 |
NDQ_014155 | Technology and science have the same goals. | 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. | 0.619839 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | DQ_011312 | image | question_images/circuits_1571.png | circuits_1571.png | 0.306902 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | DQ_011396 | image | question_images/circuits_669.png | circuits_669.png | 0.303841 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_4880 | image | textbook_images/sources_of_visible_light_23094.png | FIGURE 1.1 | 0.2934 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | DD_0247 | image | teaching_images/atomic_structure_6540.png | This diagram shows a simple model of an atom. At the center of the atom is the nucleus. The nucleus contains neutrons and protons. A proton is a particle with a positive electric charge. The neutron is a particle with no electric charge. Electrons are particles with negative charges. They revolve around the nucleus in orbits. An atom typically has the same number of protons and electrons. Hence the positive and negative charges cancel each other out. | 0.291549 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | DQ_011367 | image | question_images/circuits_219.png | circuits_219.png | 0.286429 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | DQ_010661 | image | abc_question_images/nuclear_energy_17095.png | nuclear_energy_17095.png | 0.284427 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | DQ_010719 | image | question_images/nuclear_energy_7095.png | nuclear_energy_7095.png | 0.284127 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_4141 | image | textbook_images/atomic_nucleus_22673.png | FIGURE 1.1 | 0.282987 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_4984 | image | textbook_images/wave_interactions_23166.png | FIGURE 1.1 | 0.282644 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | DQ_010777 | image | question_images/nuclear_energy_8107.png | nuclear_energy_8107.png | 0.281172 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_0726 | text | null | Nuclear energy is produced by splitting the nucleus of an atom. This releases a huge amount of energy. | 0.764636 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_3801 | text | null | Although all electromagnetic waves travel at the same speed, they may differ in their wavelength and frequency. | 0.752933 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_4983 | text | null | Although atoms are very tiny, they consist of even smaller particles. Atoms are made of protons, neutrons, and electrons: Protons have a positive charge. Electrons have a negative charge. Neutrons are neutral in charge. | 0.746463 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_3871 | text | null | We use electricity for many purposes. Devices such as lights, stoves, and stereos all use electricity and convert it to energy in other forms. However, devices may vary in how quickly they change electricity to other forms of energy. | 0.739617 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_3970 | text | null | The number of protons per atom is always the same for a given element. However, the number of neutrons may vary, and the number of electrons can change. | 0.733047 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_4343 | text | null | Electrical energy is transmitted by moving electrons in an electric current. In order to travel, electric current needs matter. It cannot pass through empty space. However, matter resists the flow of electric current. Thats because flowing electrons in current collide with particles of matter, which absorb their energy. Some types of matter offer more or less resistance to electric current than others. | 0.729514 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_3860 | text | null | Electric current cannot travel through empty space. It needs a material through which to travel. However, when current travels through a material, the flowing electrons collide with particles of the material, and this creates resistance. | 0.727579 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_2746 | text | null | Like all organisms, bacteria need energy, and they can acquire this energy through a number of different ways. | 0.72307 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_1604 | text | null | Radioactivity is the tendency of certain atoms to decay into lighter atoms, a process that emits energy. Radioactivity also provides a way to find the absolute age of a rock. First, we need to know about radioactive decay. | 0.713803 |
NDQ_014156 | Electrons were discovered because of a technological device called the vacuum tube. | null | a. true, b. false | a | T_0216 | text | null | Energy travels through space or material. Heat energy is transferred in three ways: radiation, conduction, and convection. | 0.709421 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.