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3 cards from this section. Quick, good the night before a test.
What happens to the frequency of light as the source approaches the observer?
Think about how sound changes pitch when closer.
What is the term used for light becoming less frequent as a source moves away?
This term is related to color and frequency.
What happens to light from a source moving towards an observer?
Relate this to the sound change in pitch when an object approaches.
True or False: The Doppler Effect only applies to sound waves.
Think about light and sound both being waves.
An object emits light with a wavelength of 500 nm, moving away from the observer at 240,000 km/s. Calculate the new observed wavelength.
You need to convert km/s to m/s for the calculation.
A star is exhibiting a red shift, resulting in a 4 nm change in wavelength. If its original wavelength was 600 nm, what is its observed wavelength?
Remember red shift means increase in wavelength.
4 more questions in this section. Enroll free to practise them all.
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