Acoustics

__** Speed **__: different waves travel at different speeds. Waves on the sea are slow compare to the speed of sound. The Soun travels 330 m/s.

__** Frecuency **__: Is the number of waves that pass a point per second. This is measured in Hertz (Hz)

__** Wavelength: **__ is the distance between matching points on a wave.

Sound waves are longitudinal.
 * __ Longitudinal __**: Longitudinal waves vibrate parallel to the direction of travel of the waves.

__** Transverse **__: Transverse waves at right angles to the direction of travel of the waves. Light and radio waves are transverse waves.