science vocabualry
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| pitch | a measure of how high or low a sound is perceived to be, depending on the frequency of the sound wave
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| sonic boom | explosive sound heard when a shock wave from an object traveling faster than the speed of sound reaches a person's ear
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| ultrasonic | frequency's that are above 20,000 Hz
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| infrasonic | frequency's that are elow 20 Hz
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| decibel | most common unit used to measure loudness
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| loudness | extent to which a sound can be heard
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| echo | reflected sound wave
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| echolocation | process of using reflected sound waves to find objects
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| Doppler Effect | observed change in the frequency of a wave when the source or observer is moving
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| reflection | bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go through
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| diffraction | change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening
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| refraction | bending of a wave as the wave passes between two substances in which the speed of the wave differs
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| interfernce | combination of two or more waves that results in a single wave
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Or sort by any of the columns using the down arrow next to any column heading.
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