Imagine you're sitting on a park bench, and a fire truck is zooming past you with its siren blaring. When the truck comes toward you, the sound waves get squished together, making the pitch seem higher. Once it passes by and moves away, the sound waves stretch out, making the pitch lower. This change in pitch is called the Doppler Effect. It’s like when a friend runs toward you while calling your name, their voice sounds a bit sharper than when they run away.
Examples
- A fire truck with its siren blaring zooms past you, it sounds higher as it approaches and lower as it moves away.
- You hear a train whistle change pitch when it passes by the station.
- When your friend rides a bicycle toward you while calling out, their voice sounds sharper than when they ride away.
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See also
- What Causes the ‘Doppler Effect’ and Why Do We Notice It?
- What Causes the ‘Doppler Effect’ in Sound?
- What Causes the ‘Sound’ of a Bell and How Is It Different from Other Instruments?
- What Causes the ‘Sound’ of Thunder and How Is It Different From Lightning?
- What Causes the ‘Sound’ in a Thunderstorm?
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