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17 Cards in this Set
- Front
- Back
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How is sound produced?
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Vibrating matter
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What is a wave?
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a disturbance moving through a solid, liquid, or a gas.
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How does sound travel?
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In waves
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What is the frequency of a sound wave?
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The number of vibrations in a given unit of time.
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Sound is a ______________ wave moving outwart from its source.
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compression
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What is the wavelength of a sound wave?
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The distance between two compressions.
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What determines the pitch of a sound?
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The frequency of a vibrating object.
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Objects vibrating __________ have a higher pitch.
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faster
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Objects vibrating ___________ have a lower pitch.
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slower
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Sound travels more quickly through ______________ than through _____________ and ______________.
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solid
liquids and gases |
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Why does sound travel more quickly through solids than liquids and gases?
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Because the molecules of a solid are closer together.
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Sound traves slowest through _______.
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gases
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Why does sound travel most slowly through gases?
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Because the molecules of a gas are farthest apart.
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Some animals make and hear ____________________ different from those that humans can make and hear.
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ranges of sound vibrations
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Musical instruments __________ to produce sound.
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vibrate
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Where can sound waves travel?
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only where there is matter to transmit them
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How do string instruments make sound?
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The strings vibrate
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