AMPLITUDE

WAVELENGTH

RAREFACTION

COMPRESSION

FREQUENCY

Amplitude is the height of a wave, measured in meters (m). The higher the amplitude the higher the intensity of the wave.

Wavelength is the length of one wave, measured in meters (m).

The part of the wave where the particles are spread out far apart is called rarefaction.

The part of the wave where the particles are compressed together is called compression.

Frequency is the number of waves to pass a point every second, measured in Hertz (Hz). The frequency of audible sound ranges from 20Hz to 20,000Hz.

Sound