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| heat energy is transferred through liquids and gases by means of up-and-down movements |
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| device that makes work easier by changing force and distance or by changing the direction of a force |
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| energy of shape or position; stored energy |
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| material made up of atoms with tightly bound electrons that are unable to flow freely; substance that does not conduct heat easily |
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| material which permits electrons to flow freely or transfers heat more easily than other substances |
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| upward force in a fluid that exists because the pressure of a fluid varies with depth |
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| combination of two or more simple machines |
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| machine that takes advantage of the fact that pressure is transmitted equally in all directions in a liquid; obtains a large force on a large piston by applying a small force with a small piston |
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| heat transfer through space |
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| instrument used to measure temperature |
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| description of speed in a given direction |
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| heat transfer in liquids and gases by means of convection currents |
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| number of waves that pass a certain point in a given amount of time |
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| traveling disturbance that carries energy from one place to anther |
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| the background or object that is used for comparison |
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| property of sound that depends on frequency |
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| bending of waves due to a change in speed |
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| bouncing back of waves upon reaching another surface |
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| rate at which an object moves |
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| distance between two consecutive similar points on a wave |
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| decrease in velocity, the value of acceleration is negative |
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| heat transfer through a substance or from one substance to another by direct contact of molecules; method of charging an object by allowing electrons to flow through one object to another object |
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| explanation that says that the buoyant force on an object is equal to the weight of the fluid displaced by the object |
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