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Cards In This Set
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What is the relationship between frequency and pitch?
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They are the same.
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Distinguish between infrasonic and ultrasonic sound waves.
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Frequency
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Cite evidence to support the fact that compressions and rarefactions l in thesame direction in a wave.
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In the example, the curtain moves after the door is opened or closed.
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Why will sound not travel in a vacuum?
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Sound is vibrations of air
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What is the speed of sound in dry air at 0 degrees Celcius
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330 m/s
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What is an echo?
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A reflection of sound
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What is the cause of refraction
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When parts of the wavefront travel at different speeds.
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Why does sound sometimes refract under water?
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Temperature vibrations
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What ultimately becomes of the energy of sound in the air?
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Turns into thermal energy
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Give at least two factors that determine the natural frequency of an object
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Elasticity and SHape
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When you listen to a radio, why do you hear only one station at a time rather than hearing all stations at once?
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Because the natural frequency is set to match one signal.
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When is it possible for one wave to cancel another?
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When the crest of one wave overlaps the trough of another..
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What physical phenomenon underlies the productions of beats?
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Two tones of slightly different frequencies and sounded together.
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How does a radio wave differ from a sound wave?
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Radio waves of electromagnetic vibrations.
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What are three principal characteristics of musical tones?
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Pitch, loudness, quality
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