Describe with the help of a diagram how compressions and rarefactions are produced in air near a source of sound?

Question: Describe with the help of a diagram how compressions and rarefactions are produced in air near a source of sound?

Sound is a form of energy that travels as waves through a medium, such as air, water or solid objects. When a source of sound, such as a speaker, vibrates, it creates variations in the pressure and density of the surrounding air molecules. These variations are called compressions and rarefactions.

A compression is a region where the air molecules are pushed closer together, creating a high-pressure zone. A rarefaction is a region where the air molecules are pulled apart, creating a low-pressure zone. The diagram below illustrates how compressions and rarefactions are produced in air near a source of sound.

[diagram]

As you can see, the source of sound moves back and forth, alternately pushing and pulling the air molecules near it. This creates a series of compressions and rarefactions that propagate outward from the source as sound waves. The distance between two consecutive compressions or rarefactions is called the wavelength of the sound wave. The number of compressions or rarefactions that pass a fixed point per second is called the frequency of the sound wave. The frequency determines the pitch of the sound we hear.