Question

The case whereby sound waves are heard at either a higher or lower pitch due to an object's motion is called:

the Doppler effect
shock waves
beats
resonance

Answer 1

doppler effect!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! ! ! ! ! ! ! ! ! ! !

Answer 2

Answer:

the Doppler effect

Explanation:

The doppler effect is what we called the effect that happens when the wavelength or frequency of a sound changes because the observer is moving relatevily form the object, could be moving closer or moving further away, but the wavelenght and the frequency changes alongside with the movement.