Doppler Effect (Grade 12 NSC Matric Physical Sciences): Quizzes
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Practise the questions
10 questions from this quiz
What is the Doppler effect?
What is the Doppler effect?
Change in frequency due to relative motion
What is required for the Doppler effect to occur?
What is required for the Doppler effect to occur?
Relative motion between source & observer
Which types of waves does the Doppler effect apply to?
Which types of waves does the Doppler effect apply to?
All types of waves
What happens to pitch when an ambulance siren approaches you?
What happens to pitch when an ambulance siren approaches you?
Sounds higher in pitch
What happens to pitch when a police car moves away from you?
What happens to pitch when a police car moves away from you?
Sounds lower in pitch
Does the actual frequency of an ambulance siren change as it passes?
Does the actual frequency of an ambulance siren change as it passes?
No, only perception changes
What happens to sound waves when source and observer get closer?
What happens to sound waves when source and observer get closer?
Waves are compressed
What happens to sound waves when source and observer move apart?
What happens to sound waves when source and observer move apart?
Waves are stretched out
In the tuning fork demo, what pitch when fork swings towards you?
In the tuning fork demo, what pitch when fork swings towards you?
Higher pitch
What pitch does an approaching train's horn sound?
What pitch does an approaching train's horn sound?
Higher in pitch