Question

What are infrasonic sounds?

Answer 1

1. Sound is a form of energy that provides the sensation of hearing in our ears.
2. Sound propagates in the form of a wave.
3. The number of sound waves passing through a point in the medium in one second is called the frequency of the sound wave.
4. It is measured in Hertz (Hz).

Infrasonic sounds:

1. The sound waves, having frequencies below $20\mathrm{Hz}$ are called infrasonic sounds.
2. Human beings can not hear an infrasonic sound.
3. Animals like elephants produce rumbling sounds of low frequency $(14\mathrm{Hz})$.