Question

what is intensity of sound

Answer 1

Sound intensity level also known as acoustic intensity is defined as the power carried by sound waves per unit area in a direction perpendicular to that area. The SI unit of intensity, which includes sound intensity, is the watt per square meter. 

Answer 2

Intensity is the amount of energy a sound wave has per unit of time. Intensity is measured in decibels, represented by dB. Softest sound: 0 dB. Harmful to hearing ≥ 85 dB.

Intensity of sounds

Whisper- 20 dB

Rainfall- 50 dB

Talking normally - 60 dB

Busy city traffic -80 dB

Cheer of crowd at sporting event -90 dB

Headphones at high volume -105 dB

Rock concert - 120 dB