Ever wonder why a siren sounds different when it's coming toward you than when it's going away from you? It all depends on the motion of the sound waves! The interactive activity demonstrates how the Doppler effect impacts the motion of...

This lab is designed to have students investigate the changes to wavelength and frequency that occur when the source of the waves is in motion. This video describes the lab: https://youtu.be/eCceYPBR6f4