A back and forth movement of matter.
A from of energy that travels through matter as waves.
A region in a sound wave where particles have been pushed together.
A region in a sound wave where there are fewer particles than normal.
The highest point of a wave, in a sound wave,the regions of lower air pressure.
The low point of a wave, in a sound wave, the regions of lower pressure.
The distance between one crest of a wave and the next crest.
The number of waves produced in a unit of time, such as a second.
The height of a wave from it's resting position to it's highest or lowest point, a measure of the amount of energy in a sound wave.
A fainter, higher tone that harmonizes with the main tone produced by a musical instrument or the human voice.
The quality of sound that sets one voice or musical instrument apart from another.