Doppler effect
Flashcard
•
Physics
•
4th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Doppler effect?
Back
The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.
2.
FLASHCARD QUESTION
Front
What happens to the wavelength when a sound source moves towards you?
Back
The wavelength becomes smaller.
3.
FLASHCARD QUESTION
Front
What happens to the wavelength when a sound source moves away from you?
Back
The wavelength becomes larger.
4.
FLASHCARD QUESTION
Front
What is redshift?
Back
Redshift is the displacement of spectral lines toward longer wavelengths in radiation from distant galaxies, indicating they are moving away from us.
5.
FLASHCARD QUESTION
Front
What is blueshift?
Back
Blueshift is the displacement of spectral lines toward shorter wavelengths in radiation from objects moving closer to us.
6.
FLASHCARD QUESTION
Front
If a listener moves towards a sound source, what happens to the perceived frequency?
Back
The perceived frequency increases.
7.
FLASHCARD QUESTION
Front
If a sound source moves away from a listener, how does the pitch change?
Back
The pitch appears lower.
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