Free Shipping on Orders Over $199
imaget3joa.png

Order early for pre-holiday delivery. Flinn will be closed December 24th, 2025,
through January 4th, 2026, reopening Monday, January 5th, 2026.
Orders received after 10:30 AM Central Time on Tuesday, December 23rd, 2025,
will ship after we return.  

FLINN
Your Safer Source for Science
PAVO
All-In-One Science Solution
Your Safer Source for Science
;
Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax
Email [email protected]

Doppler Effect Buzzer—Demonstration Kit

By: The Flinn Staff

Doppler Effect Buzzer Demonstration Kit for Physical Science and Physics
Doppler Effect Buzzer Demonstration Kit for Physical Science and Physics
Item #: AP6856 

Price: $29.12

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.

See more product details

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.

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

Specifications

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