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Doppler Effect Buzzer—Demonstration Kit

By: The Flinn Staff

Item #: AP6856 

Price: $26.73

In Stock.

With the Doppler Effect Buzzer Demonstration Kit for physical science and physics, easily demonstrate the Doppler effect and fundamental principles of sounds. Clearly hear the sounds of the moving buzzer.

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Product Details

Easily demonstrate the Doppler effect and fundamental principles of sounds. Tie a string to the buzzer and spin the buzzer over your head. Students will clearly hear the Doppler effect as the buzzer moves toward them and then away from them. Battery and buzzer are secure so there is no worry of the battery disconnecting. An optional second demonstration may be performed with a vacuum pump and bell jar to show students that sounds do not exist in the vacuum of space. Kit includes a reproducible student worksheet and detailed Teacher Notes with teaching tips, instructions and background information for both demonstrations.

Sound transmission, Doppler effect, vacuum.
Time Required: 15 minutes
Note: A 9 V battery is required and available separately.


Materials Included in Kit: 
Battery holder and buzzer assembly
Foam, polyerethane, charcoal
Rubber band
String, thin, 2 M long