Question

How do you prove sound travels in the form of waves?

Answer 1

A wave is a disturbance that travels through the medium, while the sound may be defined as a vibration that travels through a medium (such as air or water), generally in the audible range (something we can hear)

Complete answer:
Sound travels in the form of waves. We can show that the sound travels in the form of waves by using the tuning forks. As we know the tuning fork a tuning fork has a handle and it splits into two limbs. When these limbs are stuck on a surface, the fork begins to vibrate. As the tines contract, they create a region of low pressure (called rarefaction) as the air expands near them. When the fork moves away from their usual position, they create a region of a high pressure (known as a compression) as the air molecules are compressed. This series of the compressions and the rarefactions can be heard by placing a vibrating tuning fork near the ear. As we rotate the vibrating tuning fork near the ear, we can hear alternate soft and loud sounds. This clearly shows that sound travels in the form of waves. The same type of interference can also be seen by placing 2 speakers a meter or far away from each other and walking by them. The interference will create some regions of loud and soft sound, proving that sound travels as waves.

Note: It can also explain as that sound is the scattering of the particles knocked off from the object originating the sound. Since the experimental evidence fails to confirm the loss of particles, it is concluded that sound travels as waves.