How Sound Travels
When you speak or play an instrument, you're making the air vibrate, like when you shake a jump rope up and down. These vibrations are called waves, and they travel through the air until they reach your ears.
What Makes Different Sounds
Each sound has its own frequency, imagine how fast the spring bounces. A faster bounce is a higher pitch, like a bird chirping; a slower one is lower, like a deep voice. The number of times the wave goes up and down each second tells you the frequency, that's how we measure sound.
So whether it’s your favorite song or your mom calling you for dinner, sound is just waves in the air that your ears can catch and understand!
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