Question

When a sound source is moving toward the observer, the observer will hear a higher pitch. This is due to

a decrease in the amplitude of the sound wave.

a decrease in the frequency of the sound wave.

an increase in the frequency of the sound wave.

an increase in the amplitude of the sound wave.

I chose the third one because it makes sense, but i know amplitude has to do with sound too. So I know it's one of the last two.

Answer 1

Amplitude is best equated to the volume of sound you hear. Pitch is determined by the frequency, so you're correct. It is the Third answer.

Answer 2

Yay :D