| A | B |
|---|
| Soundwave | series of compressions and rarefaction moving out from source of vibration |
| Hertz | unit used to measure frequency, also known as cycles per second |
| Compressions | regions where particles have been pushed close together, air pressure greater here |
| Rarefaction | regions where there are fewer than normal particles, air pressure is less here |
| Frequency | number of complete waves in unit of time |
| Wavelength | distance from one compression to the next. |
| Pitch | highness or lowness of a sound |
| Crests | represent compressions or areas of higher air pressure |
| Trough | represent rarefactions or regions of lower air pressure |
| Amplitude | amount of energy in a soundwave |
