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Sound
Sound 6P 1.3
Term | Definition |
---|---|
sound | created by vibrations that produce waves of energy that move through matter |
vibration | back and forth movement, that causes sound |
pitch | measures how high or low a sound is |
loudness | measures how well a sound can be heard |
decibel | unit measuring loudness |
Doppler Effect | the change in pitch (frequency) as a sound gets closer to you |
vacuum | a place where there are NO molecules. Sound can not be heard here. |
hertz | unit measuring pitch (frequency) |
amplitude | height of a wave. used to measure loudness (volume) |
frequency | number of waves that pass a position in a certain amount of time |