Doppler Effect Worksheet
A Grade 11 Science worksheet covering the Doppler Effect, its principles, and applications.
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Doppler Effect Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work for calculation problems.
1. Which of the following best describes the Doppler Effect?
The bending of light as it passes through a medium.
The change in frequency of a wave in relation to an observer who is moving relative to the wave source.
The reflection of sound waves off a surface.
The interference pattern created by two overlapping waves.
2. When an ambulance with its siren on approaches you, what happens to the perceived pitch of the siren?
It decreases.
It increases.
It remains the same.
It becomes inaudible.
3. The Doppler Effect is observed for both sound waves and waves.
4. When a wave source moves away from an observer, the observed frequency .
5. The Doppler effect only occurs when the source of the wave is moving, not the observer.
True
False
6. Explain how the Doppler Effect is used in medical imaging, specifically in ultrasound.
7. Observe the diagram below illustrating the Doppler Effect. In your own words, describe what is happening to the sound waves as the source moves.
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