Question

1. which sound characteristic is not affected by the relative motion of an object? (1 point)

amplitude
frequency
intensity
pitch

Explanation:

The Doppler - effect changes frequency, pitch (which is related to frequency), and intensity can be affected by the relative motion due to the change in the distance between the source and the observer. Amplitude represents the maximum displacement of the particles in the medium and is not affected by the relative motion of the source or the observer.

Answer:

amplitude