Question

Are rarefactions troughs in a sound wave?

Answer correctly to gain 20 points

Answer 1

Yes their is refraction troughs in sound waves
Because sound can travel in all medium.
And change of angle from one medium to another cause refraction.

Answer 2

Refraction of sound waves is most evident in situations in which thesound wave passes through a medium with gradually varying properties. For example, sound waves are known torefract when traveling over water. ...Sound waves travel slower in cooler air than they do in warmer air.

When sound travels in a given medium, it strikes the surface of another medium and bounces back in some other direction, this phenomenon is called the reflection of sound. The waves are called the incident andreflected sound waves

Refraction of Sound Waves. Refraction of waves involves a change in the direction of waves as they pass from one medium to another. Refraction, or bending of the path of the waves, is accompanied by a change in speed and wavelength of the waves. ... For example, sound waves are known to refractwhen traveling over water