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science ch. 15 w.
science chapter 15 on waves
| Question | Answer |
|---|---|
| wave | is a destebaence that transfers energy from place to place |
| energy | as the ability to do work |
| medium | material at which a wave travels |
| mechanical wave | waves that require medium through which to travel |
| vibration | is repeated back-and-fourth or up-and-down |
| transverse wave | waves that move the medium at right angles to the direction in which the wave travels |
| longitudinal wave | move the medium parallel to the direction in which the waves traveles |
| compression | a part where all the coils are close together |
| rarefaction | these parts were all the coils are spread out |
| trough | lowest part of a transverse wave |
| crest | highest part of a transverse wave |
| wavelength | the distance between two corresponding parts of a wave |
| amplitude | the maximum distance that the particles of the medium carrying the wave |
| frequency | the number of waves that passes a certain spot in a certan amount of time |
| hertrz | frequency is measured in units called ........ |
| speed of wave | speed= wavelength+ frequency |
| reflection | this interaction with a surface (seeing yourself in water) |
| refraction | the bending of waves due to a change in speed |
| diffraction | when two waves going in two different directions meet |
| constructive interference | the interference that occurs when waves combine to make a wave with a larger amplitude |
| destructive interference | an interference that occurs when waves combine and get smaller |
| resonance | is an increase in the amplitude of a vibration |
| standing wave | is a wave that appears to stand taller or in one place, but its the opposite |