| A | B |
|---|
| amplitude | the distance between the resting point and a trough or crest (the height 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 is produced by vibrations and can be heard |
| vibrate | to move back and forth quickly |
| volume | the loudness of a sound |
| wavelength | the distance between one crest or trough to the next on a wave |
| medium | the matter through wich a wave travels |
| pitch | the measure of how high or low a sound is |
| wave | a change that carries energy from one place to another |
