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17.4 Chemistry
Vocabulary Words
Question | Answer |
---|---|
sound waves | a longitudinal wave consisting of compressions and rarefactions, which travels through a medium |
intensity | the rate at which a wave's energy flows through a given unit of area |
decibel | a unit that compares the intensities of different sounds |
loudness | a physical response to the intensity of sound, modified by physical factors |
pitch | the frequency of a sound as a listener perceives it |
sonar | a technique for determining the distance to an object under water |
Doppler effect | a change in sound frequency caused by motion of the sound source, motion of the listener, or both |
resonance | the response of a standing wave to another wave of the same frequency, with dramatic increase in amplitude of the standing wave |