Question

The _______ of a sound wave is defined as the amount of energy passing through a unit area of the

wave front in a unit of time.
A. amplitude
B. frequency
C. compression
D. intensity

Answer 1

This is the sound intensity.(answer D is the correct one).

Sound intesity is the amount of sound energy (that is, energy that takes a form of vibration) per certain area, for example square meter. Its symbol is I and the unit is watt per square meter (
`(w)/(m^(2) )`)