Respuesta :
if the stereo has a dial that changes the volume of the sounds the stereo makes, the one that being done by the dial is : D. Changing the amplitude of the sound waves
Answer:
changing the amplitude of the sound waves
Explanation:
The amplitude of a sound wave is a measure of how loud the sound produced by the wave is. Sound waves with higher amplitudes produce louder sounds, while sound waves with lower amplitudes produce quieter sounds. So changing the volume of a sound means that the amplitude of the sound waves changes.
also from study island :)