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Sound
what is sound?
Sounds are made by vibrations that create waves (in air, water, etc.) When these waves are detected by our ears, we hear them as different sounds. When the vibrations are faster, the sounds have a higher pitch, and when they are slower, they have a lower pitch. When the vibrations are moving more (larger amplitude) the sound is louder, and when the vibrations are moving with a smaller amplitude, the sound is softer.
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