| A | B |
|---|
| amplitude | The distance between the resting point and a crest and trough |
| crest | a high point of a wave |
| frequency | The number of crests or troughs of a wave that pass by over a certain amount of time. |
| sound | A form of energy that travels as waves through matter |
| trough | A low point of a wave |
| vibrate | To move back and forth quickly |
| wave | A change that carries energy from one place to another |
| wavelength | The distance between one crest or trough |
| medium | The matter through which a wave travels |
| pitch | how high or low a sound is |
| volume | How loud or how soft a sound is. |
