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Sound
Question | Answer |
---|---|
sound | a form of energy produced by vibrating objects |
vibration | a rapid back-and-forth movement that produces sound |
pitch | how high or low a sound is |
frequency | the number of waves that move past a point in a certain amount of time |
wave | a repeating up-and-down or back-and-forth movement of matter |
decibel | the unit used to measure the loudness of sound |
echo | a reflected sound |
volume | how soft or low a sound is |