Longitudinal wave

Definition

A longitudinal wave is a type of wave where the particle displacement is parallel to the direction of wave propagation. Sound waves in air are a common example.

5 Must Know Facts For Your Next Test

1. In a longitudinal wave, compressions and rarefactions occur along the direction of wave propagation.
2. Sound waves are the most common examples of longitudinal waves.
3. The wavelength in a longitudinal wave is the distance between two consecutive compressions or rarefactions.
4. Longitudinal waves can propagate through solids, liquids, and gases.
5. The speed of a longitudinal wave depends on the medium's elasticity and density.

Review Questions

Related terms

Transverse Wave: A type of wave where particle displacement is perpendicular to the direction of wave propagation.

Compression:

A region in a longitudinal wave where particles are closest together.

Rarefaction:

A region in a longitudinal wave where particles are furthest apart.