| A | B |
|---|
| wave | disturbance that tranfers energy from place to place |
| mechanical wave | wave that transfers energy through matter |
| electromagnetic wave | wave that tranfers energy through empty space |
| medium | material through which mechanical waves can travel |
| transverse waves | wave in which the particles of the medium move up and down at right angles to the direction of the wave motion |
| crest | high point of a transverse wave |
| trough | low point of a transverse wave |
| longitudinal wave | wave in which the particles of teh medium move back and forth in the direction of the wave motion |
| compression | part of a medium where the particles are close together |
| rarefraction | part of a medium wher ethe particles are far apart |
| wavelength | distance between two neighboring crests and troughs |
| frequency | number of complete waves passinga point in a given time |
| amplitude | height of a transverse wave |
| speed | distance a wave travels in one unit of time |
| hertz | unit used to measure the frequency of a wave |
