| A | B |
|---|
| tsunamis | the energy released by undersea earthquakes cause giant waves |
| transverse waves | the wave disturbance moves at right angles to the direction of the wave |
| longitudidinal waves | back-and-forth movement that is parallel to the direction of the wave |
| seismic waves | produced by an earthquake |
| surface water wave | combination of a transverse and longitudinal wave |
| amplitude | the distance from the crest or trough of the wave to the middle level |
| frequency | the number of crests passing by a fixed location in one second |
| wavelength | measure of the distance between one crest and the next |
| crest | high point |
| trough | low point |
| interference | interation of two or more waves at one point |
| constructive wave interference | when two or more waves add together |
| destructive wave interference | when one wave destroys the other |
| Doppler effect | change in the pitch and frequency of a sound as the source moves closer to the observer |
