Frequency and the Doppler Effect

     What is frequency?
What is the pitch of a sound?

What is high pitch sound and a low pitch sound?
If you know the answers for these questions 👆, it is time for you to learn about the Doppler effect

The pitch of the sound of a moving train can rapidly change from high to low - let's find out why!

https://drive.google.com/drive/folders/1vQesqSfDAOip-850rXd_XR-UF4Gkk8EZ?usp=sharing




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