The Doppler Effect

Question 1

Which waves does the doppler effect apply to?

Answer 1

ALL waves including light and sound!!

Question 2

When a listener is in motion towards the source of a sound, is the frequency of the sound higher or lower?

Answer 2

HIGHER

Question 3

If there is motion between the source and the receiver of the sound, the frequency which is heard by the receiver will be _________ than the frequency emitted by the source

Answer 3

DIFFERENT

Question 4

As the truck moves to the right, each wave that is emitted by the siren is produced at a point to the _____ of the previous wave.

Answer 4

RIGHT

Question 5

The doppler effect states that the _________ of the source does NOT change

Answer 5

FREQUENCY!!! (only the frequency relative to an observer is changing)

Question 6

Is the frequency of the sound in front of the truck higher or lower than the actual source frequency?

Answer 6

HIGHER

Question 7

Is the frequency of the sound behind of the truck higher or lower than the actual source frequency?

Answer 7

LOWER