Compressions

Definition

Compressions are regions in a longitudinal wave where the particles of the medium are closest together. They represent areas of high pressure and density.

5 Must Know Facts For Your Next Test

1. Compressions occur in longitudinal waves such as sound waves.
2. The distance between consecutive compressions is known as the wavelength.
3. Compressions alternate with rarefactions, which are regions of low pressure and density.
4. In a sound wave, compressions correspond to the crests of transverse waves when visualized graphically.
5. The speed at which compressions travel through a medium depends on the medium's properties, such as density and elasticity.

Review Questions

• What defines a compression in a longitudinal wave?
• How does the spacing between compressions relate to wavelength?
• What is the difference between compressions and rarefactions?

Related terms

Rarefaction:

A region in a longitudinal wave where the particles are furthest apart, corresponding to areas of low pressure and density.

Wavelength:

The distance between two consecutive points that are in phase, such as from one compression to the next in a longitudinal wave.

Amplitude:

The maximum displacement of particles from their equilibrium position in a wave, indicating the energy carried by the wave.