Question

to a bystander, which property of a sound wave changes due to the Doppler

A. Speed
B. Phase
C. Amplitude
D. Frequency

Answer 1

To a bystander, which property of a sound wave changes due to the Doppler? D. Frequency



Hope This Helps :)

Answer 2

Hi! The answer is D. Frequency. Thin about it-- when you listen to a siren go by, when it hasn't passed you yet it has a low frequency, but once it passes you, you hear a higher frequency.

I hope this helps :)