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Stack #124386

QuestionAnswer
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
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