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