Is this a Doppler effect?

When there is relative movement between the source of sound waves and the
person hearing them the wavelength of the waves changes. This is called:

a) simple harmonic motion
b) the Doppler effect
c) wave interference
d) wave superposition

Question

Is this a Doppler effect? 

When there is relative movement between the source of sound waves and the
    person hearing them the wavelength of the waves changes. This is called:

	a) simple harmonic motion
	b) the Doppler effect
	c) wave interference
	d) wave superposition

anonymous · Answer

It is! Have you even driven around with the windows down? Notice how the noise of the passing cars changes as it passes you. This is due the doppler effect. Take a look at this video for an audio representation of the effect. Listen to the siren at the beginning. https://www.youtube.com/watch?v=ZPJyYaXhuv4

anonymous · Answer

woah awesome! thank you!!!!