| A | B |
|---|
| intensity | amount of energy carried by a wave |
| loudness | perception of the intensity of a sound |
| decibels | unit of measurement of loudness |
| ultrasound | sound wave with frequency above 20,000 Hz |
| infrasound | sound wave with frequency below 20 Hz |
| pitch | perception of frequency of a sound |
| Doppler Effect | the apparent change in frequency of sound as the source moves in relation to listener |
| sound | caused by vibrating matter |
| amplitude | the height of a wave |
| frequency | the number of waves that pass a point in a given time |
