 | Term | Definition |
| |
speedometer |
a device that shows instantaneous speed. |
| |
friction |
a force between surfaces that resists the movement of 1 surface past theother surface |
| |
refraction |
the bending of a light wave as it moves from one material to another |
| |
photon |
a bundle of energy that is released when an atom loses some energy |
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opaque |
does not allow light to pass through |
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mass |
the amount of matter in an object |
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frame of reference |
the object an observer uses to ddetect motion |
| |
relative motion |
the change in postion if 1 object compared to the position of another |
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transparent |
allows light 2 pass through so that objects on the other side can be seen |
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motion |
when you move |
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force |
a push or a pull |
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amplitude |
the distance bertween a wave's midpoint and its crest or trough |
| |
focal point |
the point at which light rays meet when reflected or refracted |
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gravity |
the force of attraction that exists between any 2 objects |
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velocity |
a measure of both the speed and direction of a moving object |
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accelaration |
the change in velocity during a particular time period |
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frequency |
the # or waves that pass a point in a given amount of time |
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air resistance |
the friction from air molecules hitting an object as the object moves through the air |
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intensity |
a measure of the amount of energy in a wave |
| |
laser light |
light of a single wavelength with all the waves lined up |
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instantaneous speed |
the speed at any given point |
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speed |
the distance an object moves in a certain period of time |
