| A | B |
|---|
| sound | A series of vibrations that you can hear |
| compression | The part of a sound wave in which air is pushed together |
| sound wave | A moving pattern of high and low pressure that you can hear |
| amplitude | A measure of the strength of a sound wave; shown by height on a wave diagram |
| wavelength | The distance from one compression to the next in a sound wave |
| loudness | Your perception of the amount of sound energy reaching your ear |
| pitch | A measure of how high or low a sound is |
| speed of sound | The speed at which a sound wave travels through a given material |
| echo | A sound reflection |
| sonic boom | A shock wave of compressed sound waves produced by an object moving faster than the speed of sound |
