Question 1
What is the Doppler effect in wave behaviour?
Question 2
A sound source moves toward a stationary observer. What is observed?
Question 3
A sound source moves away from a stationary observer. What is observed?
Question 4
Which quantity is not changed by the Doppler effect for waves in a fixed medium?
Question 5
Why does the pitch of an ambulance siren seem higher as it approaches and lower as it moves away?
