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ch.25 vocab
Question | Answer |
---|---|
vibration | a repeating back and forth motion at an equilibrum position |
wave | a disturbance that is transmitted from one place to the next without the transportation of matter |
peroid | the time of a back and forth swing |
simple harmonic motion | back and forth motion of a pendulum |
sine curve | a pictoral representation of a wave |
crest | high points on a wave |
trough | low points on a wave |
amplitude | the distance from the equilibrum position to hte trough or crest |
wave length | is the distance from one crest to another |
frequency | the number of waves per second |
hertz | the unit of frequency |
transverse wave | when the moition of the medium is at right angles to the direction in witch the wave is traveling |
longitudinal waves | when the medium and the direction of the wave are going the same way |
interference pattern | is a regular arrangement of places where wave effects are increasing decreasing or stay the same |