Chapter 19 Q+A

Question 1

The Doppler effect is presented as a ______ when the source and the receiver are_____.

Answer 1

frequency shift

in motion relative to each other

Question 2

Starting from the same point, the sound source is moving toward the east at 12 mph and the receiver is moving toward the west at 10 mph. The Doppler shift is_____ (+ or -)

Answer 2

The Doppler shift is negative because the source and receiver are moving farther apart

Question 3

Starting from the same point, the receiver is moving toward the west at 12 mph and the source is moving toward the west at 10 mph. The Doppler shift is____ (+ or -)

Answer 3

The Doppler shift is negative because the source and receiver are moving farther apart

Question 4

Doppler shift produces information about

Answer 4

velocity

Question 5

At what angle between the sound beam and the direction of motion will the Doppler shift be closest to zero?

Answer 5

0 and 180 degrees

the sound beam and the direction of motion should be parallel