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NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_4894 | image | textbook_images/states_of_matter_23100.png | FIGURE 1.2 | 0.289285 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_4744 | image | textbook_images/properties_of_acids_23034.png | FIGURE 1.1 Hydrochloric acid reacting with the metal zinc. | 0.289096 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | DQ_011501 | image | question_images/states_of_matter_7614.png | states_of_matter_7614.png | 0.275408 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_3519 | image | textbook_images/acids_and_bases_22216.png | FIGURE 10.6 Blue litmus paper turns red when placed in an acidic solution. | 0.272664 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_3674 | image | textbook_images/forms_of_energy_22343.png | FIGURE 17.13 Atoms are moving at the same speed in the soup on the spoon as they are in the soup in the pot. However, there are more atoms of soup in the pot, so it has more thermal energy. | 0.270862 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_4180 | image | textbook_images/boyles_law_22686.png | FIGURE 1.1 | 0.268924 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_4745 | image | textbook_images/properties_of_acids_23035.png | FIGURE 1.2 | 0.266311 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_4633 | image | textbook_images/modern_periodic_table_22960.png | FIGURE 1.2 | 0.264196 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_3930 | image | textbook_images/types_of_matter_22527.png | FIGURE 3.13 These three mixtures differ in the size of their particles. Which mixture has the largest particles? Which has the smallest particles? | 0.261923 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_3938 | image | textbook_images/solids_liquids_gases_and_plasmas_22537.png | FIGURE 4.4 Each bottle contains the same volume of oil. How would you describe the shape of the oil in each bottle? | 0.260017 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_4783 | text | null | Stirring a solute into a solvent speeds up the rate of dissolving because it helps distribute the solute particles throughout the solvent. For example, when you add sugar to iced tea and then stir the tea, the sugar will dissolve faster. If you dont stir the iced tea, the sugar may eventually dissolve, but it will take much longer. | 0.748945 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_3960 | text | null | Solids that change to gases generally first pass through the liquid state. However, sometimes solids change directly to gases and skip the liquid state. The reverse can also occur. Sometimes gases change directly to solids. | 0.686148 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | 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. | 0.685418 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_4715 | text | null | Compare and contrast the basic properties of matter, such as mass and volume. | 0.675251 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | 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. | 0.668406 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | 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. | 0.654633 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_4146 | text | null | Identify the conditions that will speed up or slow down the dissolving process. | 0.654189 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | 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. | 0.652904 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_4151 | text | null | 1. List three factors that affect the rate at which a solute dissolves in a solvent. 2. Gina is trying to dissolve bath salts in her bathwater. How could she speed up the rate of dissolving? | 0.65284 |
NDQ_018198 | if you stir a mixture long enough, you can dissolve any amount of solute in a given solvent. | null | a. true, b. false | b | T_3941 | text | null | Why do different states of matter have different properties? Its because of differences in energy at the level of atoms and molecules, the tiny particles that make up matter. | 0.652775 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | DQ_002554 | image | abc_question_images/earth_eclipses_11656.png | earth_eclipses_11656.png | 0.302008 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | DQ_002571 | image | question_images/earth_eclipses_1656.png | earth_eclipses_1656.png | 0.298044 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_0601 | image | textbook_images/other_objects_in_the_solar_system_20418.png | FIGURE 25.33 Meteors burning up as they fall through Earths atmosphere. | 0.284432 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_0488 | image | textbook_images/telescopes_20336.png | FIGURE 23.2 An electromagnetic wave has oscillating electric and magnetic fields. | 0.275395 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | DQ_011210 | image | question_images/parts_telescope_8150.png | parts_telescope_8150.png | 0.274914 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_1212 | image | textbook_images/galaxies_20796.png | FIGURE 1.2 | 0.268804 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_0943 | image | textbook_images/big_bang_20629.png | FIGURE 1.1 | 0.268604 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_3591 | image | textbook_images/gravity_22272.png | FIGURE 13.19 Einstein thought that gravity is the effect of curves in space and time around mas- sive objects such as Earth. He proposed that the curves in space and time cause nearby objects to follow a curved path. How does this differ from Newtons idea of gravity? | 0.263821 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_0558 | image | textbook_images/introduction_to_the_solar_system_20389.png | FIGURE 25.4 The Sun and planets with the correct sizes. The distances between them are not correct. Figure 25.5 shows those distances correctly. In the upper left are the orbits of the inner planets and the asteroid belt. The asteroid belt is a collection of many small objects between the orbits of Mars and Jupiter. In the upper right are the orbits of the outer planets and the Kuiper belt. The Kuiper belt is a group of objects beyond the orbit of Neptune. | 0.263132 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_4335 | image | textbook_images/einsteins_concept_of_gravity_22778.png | FIGURE 1.1 This diagram shows how Earths mass bends the fabric of space and time around it, causing smaller objects such as satellites to move toward Earth. | 0.262096 |
NDQ_018220 | light always travels at the same speed across space. | 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. | 0.768065 |
NDQ_018220 | light always travels at the same speed across space. | 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. | 0.722426 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | 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. | 0.721061 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_3820 | text | null | When visible light strikes matter, it interacts with it. How light interacts with matter depends on the type of matter. | 0.707354 |
NDQ_018220 | light always travels at the same speed across space. | 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. | 0.704984 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_4999 | text | null | Wave speed is the distance a wave travels in a given amount of time, such as the number of meters it travels per second. Wave speed (and speed in general) can be represented by the equation: Speed = Distance Time | 0.704912 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_0217 | text | null | Radiation is the transfer of energy by waves. Energy can travel as waves through air or empty space. The Suns energy travels through space by radiation. After sunlight heats the planets surface, some heat radiates back into the atmosphere. | 0.701414 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_3675 | text | null | Energy that the sun and other stars release into space is called electromagnetic energy. This form of energy travels through space as electrical and magnetic waves. Electromagnetic energy is commonly called light. It includes visible light, as well as radio waves, microwaves, and X rays (Figure 17.14). | 0.688616 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_3592 | text | null | Regardless of what gravity is a force between masses or the result of curves in space and time the effects of gravity on motion are well known. You already know that gravity causes objects to fall down to the ground. Gravity affects the motion of objects in other ways as well. | 0.687402 |
NDQ_018220 | light always travels at the same speed across space. | null | a. true, b. false | a | T_0238 | text | null | Have you ever seen a brilliant light show in the night sky? Sometimes the ions in the thermosphere glow at night. Storms on the Sun energize the ions and make them light up. In the Northern Hemisphere, the lights are called the northern lights, or aurora borealis. In the Southern Hemisphere, they are called southern lights, or aurora australis. | 0.686098 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | DQ_002554 | image | abc_question_images/earth_eclipses_11656.png | earth_eclipses_11656.png | 0.321464 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | DQ_002571 | image | question_images/earth_eclipses_1656.png | earth_eclipses_1656.png | 0.304928 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | DQ_011210 | image | question_images/parts_telescope_8150.png | parts_telescope_8150.png | 0.296172 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | DQ_002544 | image | abc_question_images/earth_eclipses_10696.png | earth_eclipses_10696.png | 0.28769 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | T_4698 | image | textbook_images/orbital_motion_23002.png | FIGURE 1.1 | 0.28765 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | DQ_002545 | image | abc_question_images/earth_eclipses_11627.png | earth_eclipses_11627.png | 0.285733 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | T_0488 | image | textbook_images/telescopes_20336.png | FIGURE 23.2 An electromagnetic wave has oscillating electric and magnetic fields. | 0.2812 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | DQ_002538 | image | abc_question_images/earth_eclipses_10681.png | earth_eclipses_10681.png | 0.27708 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | T_0601 | image | textbook_images/other_objects_in_the_solar_system_20418.png | FIGURE 25.33 Meteors burning up as they fall through Earths atmosphere. | 0.275967 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | DQ_002842 | image | question_images/earth_day_night_96.png | earth_day_night_96.png | 0.275502 |
NDQ_018221 | light travels more quickly through a medium than across space. | 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. | 0.725754 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | T_0216 | text | null | Energy travels through space or material. Heat energy is transferred in three ways: radiation, conduction, and convection. | 0.702289 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | T_3820 | text | null | When visible light strikes matter, it interacts with it. How light interacts with matter depends on the type of matter. | 0.700446 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | T_1708 | text | null | Most of the energy that reaches the Earths surface comes from the Sun (Figure 1.1). About 44% of solar radiation is in the visible light wavelengths, but the Sun also emits infrared, ultraviolet, and other wavelengths. | 0.669884 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | T_3675 | text | null | Energy that the sun and other stars release into space is called electromagnetic energy. This form of energy travels through space as electrical and magnetic waves. Electromagnetic energy is commonly called light. It includes visible light, as well as radio waves, microwaves, and X rays (Figure 17.14). | 0.669056 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | T_0217 | text | null | Radiation is the transfer of energy by waves. Energy can travel as waves through air or empty space. The Suns energy travels through space by radiation. After sunlight heats the planets surface, some heat radiates back into the atmosphere. | 0.665947 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | 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. | 0.665837 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | 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. | 0.663161 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | T_0484 | text | null | Earth is just a tiny speck in the universe. Our planet is surrounded by lots of space. Light travels across empty space. Astronomers can study light from stars to learn about the universe. Light is the visible part of the electromagnetic spectrum. Astronomers use the light that comes to us to gather information about the universe. | 0.653451 |
NDQ_018221 | light travels more quickly through a medium than across space. | null | a. true, b. false | b | T_3592 | text | null | Regardless of what gravity is a force between masses or the result of curves in space and time the effects of gravity on motion are well known. You already know that gravity causes objects to fall down to the ground. Gravity affects the motion of objects in other ways as well. | 0.652328 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | DQ_002554 | image | abc_question_images/earth_eclipses_11656.png | earth_eclipses_11656.png | 0.319402 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | DQ_002571 | image | question_images/earth_eclipses_1656.png | earth_eclipses_1656.png | 0.309698 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | DQ_011076 | image | question_images/em_spectrum_6815.png | em_spectrum_6815.png | 0.30384 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | DQ_002549 | image | abc_question_images/earth_eclipses_11647.png | earth_eclipses_11647.png | 0.303182 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | DQ_002531 | image | abc_question_images/earth_eclipses_10677.png | earth_eclipses_10677.png | 0.295569 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | DQ_011119 | image | abc_question_images/optics_lense_types_19161.png | optics_lense_types_19161.png | 0.29498 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | DD_0217 | image | teaching_images/em_spectrum_9095.png | The diagram shows different kinds of waves. Visible light is the part of the electromagnetic spectrum that humans can see. Visible light includes all the colors of the rainbow. Each color is determined by its wavelength. Visible light ranges from violet wavelengths of 400 nanometers (nm) through red at 700 nm. There are parts of the electromagnetic spectrum that humans cannot see. This radiation exists all around you. You just cant see it! Every star, including our Sun, emits radiation of many wavelengths. Astronomers can learn a lot from studying the details of the spectrum of radiation from a star. Many extremely interesting objects cant be seen with the unaided eye. | 0.294287 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | DQ_011098 | image | question_images/em_spectrum_9087.png | em_spectrum_9087.png | 0.290591 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | DQ_011210 | image | question_images/parts_telescope_8150.png | parts_telescope_8150.png | 0.289324 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | DQ_011106 | image | question_images/em_spectrum_9096.png | em_spectrum_9096.png | 0.286558 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | T_3801 | text | null | Although all electromagnetic waves travel at the same speed, they may differ in their wavelength and frequency. | 0.688785 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | T_3820 | text | null | When visible light strikes matter, it interacts with it. How light interacts with matter depends on the type of matter. | 0.673887 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | T_1708 | text | null | Most of the energy that reaches the Earths surface comes from the Sun (Figure 1.1). About 44% of solar radiation is in the visible light wavelengths, but the Sun also emits infrared, ultraviolet, and other wavelengths. | 0.65876 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | T_4295 | text | null | A low level of radiation occurs naturally in the environment. This is called background radiation. One source of background radiation is rocks, which may contain small amounts of radioactive elements such as uranium. Another source is cosmic rays. These are charged particles that arrive on Earth from outer space. Background radiation is generally considered to be safe for living things. | 0.638256 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | 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. | 0.635796 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | T_4997 | text | null | A photon isnt a fixed amount of energy. Instead, the amount of energy in a photon depends on the frequency of the electromagnetic wave. The frequency of a wave is the number of waves that pass a fixed point in a given amount of time, such as the number of waves per second. In waves with higher frequencies, photons have more energy. | 0.635346 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | T_2746 | text | null | Like all organisms, bacteria need energy, and they can acquire this energy through a number of different ways. | 0.631401 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | 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. | 0.630718 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | T_0726 | text | null | Nuclear energy is produced by splitting the nucleus of an atom. This releases a huge amount of energy. | 0.629391 |
NDQ_018222 | through which of the following media does visible light travel most quickly? | null | a. air, b. water, c. vegetable oil, d. diamond | a | T_0216 | text | null | Energy travels through space or material. Heat energy is transferred in three ways: radiation, conduction, and convection. | 0.628666 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | DQ_011188 | image | question_images/optics_refraction_9199.png | optics_refraction_9199.png | 0.360494 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | DQ_011180 | image | question_images/optics_refraction_9196.png | optics_refraction_9196.png | 0.329572 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | T_3800 | image | textbook_images/properties_of_electromagnetic_waves_22425.png | FIGURE 21.4 Light slows down when it enters water from the air. This causes the wave to refract, or bend. | 0.310322 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | DQ_002554 | image | abc_question_images/earth_eclipses_11656.png | earth_eclipses_11656.png | 0.304098 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | DD_0212 | image | teaching_images/convection_of_air_8050.png | This diagram shows convection currents. Convection is the transfer of heat from one place to another by the movement of fluids. The heat source lies at the bottom of the diagram. The heat generated by this source causes the air next to it, to warm up. Warm air is lighter than cool air, and hence it rises up. As it rises up, it moves away from the heat source and cools down. As it cools down, it gets heavier and sinks towards the heat source. This cycle continues and causes a convection current. | 0.295861 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | DQ_012203 | image | question_images/optics_reflection_9184.png | optics_reflection_9184.png | 0.295265 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | DQ_002571 | image | question_images/earth_eclipses_1656.png | earth_eclipses_1656.png | 0.294794 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | T_3836 | image | textbook_images/optics_22450.png | FIGURE 22.15 Light refracts when it passes from one medium to another at an angle other than 90 . Can you explain why? | 0.290372 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | T_4253 | image | textbook_images/combining_forces_22733.png | FIGURE 1.1 | 0.2901 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | DQ_011184 | image | question_images/optics_refraction_9197.png | optics_refraction_9197.png | 0.285962 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | T_3820 | text | null | When visible light strikes matter, it interacts with it. How light interacts with matter depends on the type of matter. | 0.671578 |
NDQ_018223 | when light passes from air to glass it slows down. | 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. | 0.665376 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | T_0205 | text | null | We usually cant sense the air around us unless it is moving. But air has the same basic properties as other matter. For example, air has mass, volume and, of course, density. | 0.657199 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | T_1578 | text | null | The atmosphere has different properties at different elevations above sea level, or altitudes. | 0.651766 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | T_0024 | text | null | Flowing water slows down when it reaches flatter land or flows into a body of still water. What do you think happens then? The water starts dropping the particles it was carrying. As the water slows, it drops the largest particles first. The smallest particles settle out last. | 0.643234 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | T_0213 | text | null | Almost all energy on Earth comes from the Sun. The Suns energy heats the planet and the air around it. Sunlight also powers photosynthesis and life on Earth. | 0.63519 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | T_3837 | text | null | Lenses make use of the refraction of light to create images. A lens is a transparent object, typically made of glass, with one or two curved surfaces. The more curved the surface of a lens is, the more it refracts light. Like mirrors, lenses may be concave or convex. | 0.633729 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | 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. | 0.631061 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | 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. | 0.630768 |
NDQ_018223 | when light passes from air to glass it slows down. | null | a. true, b. false | a | T_1753 | text | null | The atmosphere is layered, corresponding with how the atmospheres temperature changes with altitude. By under- standing the way temperature changes with altitude, we can learn a lot about how the atmosphere works. | 0.630017 |
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