Gloria is working with a sound generator. If she decreases the amplitude of the sound waves being generated, what effect will it have?
A) The pitch will get higher.
B) The pitch will get lower.
C) The sound will get louder.
D) The sound will get quieter.

Question

Quizplus · Accepted Answer

Decreasing the amplitude of the sound waves will result in the sound getting quieter. This is because amplitude refers to the maximum displacement of particles in the medium through which the sound waves are traveling. So, reducing amplitude means particles will have smaller displacements, which leads to less acoustic energy being transferred to the medium and, hence, a quieter sound. The pitch and frequency of the sound waves are not affected by changes in amplitude.

Gloria Is Working with a Sound Generator