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Definition
| explanation that the pressure in a moving stream of fluid is less than the pressure in the surrounding fluid |
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| measure of the motion of molecules |
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| strip consisting of two different metals that expand at different rates and cause the strip to bend; switch in a thermometer |
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| rope, belt, or chain wrapped around a wheel; can change either the amount of force or the direction of the force |
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| inclined plane wrapped around a central bar to form a spiral |
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| flat slanted surface that multiplies force |
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| movement of heat fro a warmer object to a cooler one |
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| wave in which the motion of the medium is at right angles to the direction of the wave |
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| bending of waves around the edge of an obstacle |
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Definition
| bending of waves due to a change in speed |
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| interaction of waves that occur at the same place at the same time |
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| sound navigation ranging, a technique of using sound waves to measure distance |
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| material made up of atoms with tightly bound electrons that are unable to flow freely; substance that does not conduct |
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Definition
| solid objects slide over each other |
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| measure of the force of attraction between objects due to gravity |
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Definition
| amount of matter in an object |
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| the total force on an object is in one direction |
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| force that acts in the opposite direction of motion; will cause an object to slow down and finally stop |
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Definition
| the motion of objects whose speed is the same throughout heir movement; speed does not change |
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| push or pull that gives energy to an object, sometimes causing a change in the motion of the object |
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| machine made up of two circular objects of different sizes; a force that is applied to the wheel and transferred to the axle |
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| inclined plane that moves |
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| rigid bar free to move about a single point; may be first-class, second-class, or third-class depending on the positions of the effort force, resistance force, and fulcrum |
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| how to find speed of wave |
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Definition
| speed= frequency x wavelength |
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| how to find average speed during race |
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Definition
| total distance/total time=average speed |
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