Question

The loudness of a sound is related to the _____ of the sound wave. A. wavelength B. frequency C. velocity D. amplitude

Answer 1

The loudness of a sound is related to the "Amplitude" 

answer is D 

Answer 2

Answer:

The answer is Amplitude.

Explanation:

We should not get confused between pitch and loudness. Pitch is with respect to frequency of the sound wave whereas loudness is with respect to amplitude. More is the frequency, higher is the pitch. Larger is the amplitude, more is the loudness. Amplitude refers to the maximum vertical displacement of the wave from its mean position.