Question

what are infrasonic waves?​

Answer 1

Answer:

Explanation

Explanation:

Infrasound, sometimes referred to as low-frequency sound, describes sound waves with a frequency below the lower limit of audibility (generally 20 Hz). Hearing becomes gradually less sensitive as frequency decreases, so for humans to perceive infrasound, the sound pressure must be sufficiently high.

Answer 2

Answer:

→The term "infrasonic" applied to sound refers to sound waves below the frequencies of audible sound, and nominally includes anything under 20 Hz. Sources of infrasound in nature include volcanoes, avalanches, earthquakes and meteorites.