SOLAR SYSTEM

Detailed explanation-1: -Longitudinal waves are also called compressional waves or rarefactional waves because they produce compression and rarefaction of the pressure when traveling through a medium.

Detailed explanation-2: -Longitudinal or compression waves are defined as waves where the particle motion is in the same direction in which the wave is propagating. The oscillations in pressure are sinusoidal in nature and are characterised by their frequency, amplitude and wavelength (Figure 9.1).

Detailed explanation-3: -In a longitudinal wave, the disturbance that makes up the wave is along the direction in which the wave travels. Longitudinal waves are also referred to as compression waves.

Detailed explanation-4: -Compression in a longitudinal wave is a region where the particles are the closest together while rarefaction in a longitudinal wave is a region where the particles are spread out.