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Doppler
The Doppler Effect occurs when an observer hears a sound from a moving source. If the sound source is moving toward the observer, the perceived frequency will be higher than the actual sound frequency. If the source is moving away from the observer, the perceived frequency will be lower.
Click here for applicable science standards
Required Equipment Doppler Ball, and String
Download Teacher Notes and Student Worksheets
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Recommended quantity per lab group: 1
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