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Stack #124386
Question | Answer |
---|---|
sound | a wave produced by the vibrating object that travels through a gas liquid or solid |
vibration | a rapid back and forth motion |
vacuum | an empty space with few if any particles |
pitch | the quality of the highness or lowness of a sound |
hertz | unit for measuring frequency and pitch |
ultrasound | sound waves in the range above 20000 hertz |
resonance | strengthening of a sound wave when it combines with an objects natural vibrations |
Dopler Effect | the change in observed pitch that occurs when the source or the one who hears a sound is moving |
intensity | the amount of energy a sound has |
decibel | unit for measuring sound intenity |
amplification | increasing the strength of an electrical signal to increase the intensity of a sound wave |
acoustics | the scientific study of sound |
what is energy | the ability to cause change |
When energy is used it | changes form |
All moving matter has | kinetic energy |