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Waves
| question | anwser |
|---|---|
| Sound | A wave of compression and rarefraction |
| Pitch | Highness or lowness of a sound |
| Infrasonic | Lower than human hearing |
| Ultrasonic | sound above the human hearing like a dog whistle |
| Doppler effect | The frequency or pitch increasing when it gets closer |
| Acoustics | The transport of energy through fluctions |