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physics 25 test
chapter 25 test vocab
| Question | Answer |
|---|---|
| vibration | wiggle in time: does not move from place o place. |
| Waves | wiggles in time and space |
| period | time for one event s/w, T |
| simple harmonic motion | The back and forth vibratory motion of a swinging pendulum |
| sine curve | pictorial representation of a wave |
| crest | higest part of the wave |
| troughs | One of the lowest places on wave |
| amplitude | the distance from the lowest or highest part of the wave to the equilibrium line. |
| wavelength | the distance from crest to crest. |
| frequency | the number of cycles in a period. measured in Hz or w/s |
| hertz | the SI unit of frequency |
| transverse wave | a wave with vibrations at right angles; examples are light and water |
| longitudinal wave | a wave where the vibrations are going the same direction of the wave. example is sound |
| interference pattern | a pattern formed by the overlapping of two or more waves (overlapping waves) |
| constructive interference | addition of two or more waves when crests overlap which results in a lager amplitude |
| destructive interference | combination of waves where crest meets trough which results in no wave |
| out of phase | same as destructive interference |
| in phase | same as constructive inteference |
| standing wave | wave in which some parts of the wave are stationary and the wave appears to not be traveling. result of interference between orginal wave and a reflected wave |
| nodes | any part of the wave that appears to be stationary |
| antinodes | the positions on a standing wave where the largest amplitudes occur. |
| Doppler effect | A change in frequency and it becomes louder or the frequency increases when it gets closer to u and then it decreases after it passes u. bluer light and redder light |
| bow wave | A v-shaped wave produced by usually a boat moving faster than the wave speed. 2D and it is on the surface |
| shock wave | a cone-shaped wave produced by an object moving at supersonic speed through a fluid. 3D in a medium example aircraft |
| sonic boom | wave of pressed air that reaches a listener's ear. |
Created by:
lovesun593
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