In the Doppler Football Demonstration Kit for physical science and physics, tackling the Doppler effect is a snap. Drive home the concepts of sound wavelength and frequency with an audible tone emitted from a foam football.
Tackling the Doppler effect is a snap with this fun demonstration. Score extra points with your students as you drive home the concepts of sound wavelength and frequency with an audible tone emitted from a foam football. After connecting the buzzer to a 9-V battery, simply place the buzzer inside the specially-prepared football, seal, and throw! The receiver hears a higher pitch and the passer hears a lower pitch compared to the actual tone emitted by the buzzer. Includes modified 6” foam football, buzzer, battery clip with alligator leads, and tape. Teacher demonstration notes include complete instructions, background information, and reproducible student worksheet with answers to all questions. Requires 9-volt battery, not included. For added fun, make this demonstration “official” by wearing a referee jersey (sold separately).