cdeutsch/ursuline
Help!
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| What is the source of all sounds? | All sounds originate in the vibrations of material objects.
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| Give 3 examples of sources of sound. | 1. Sounding board 2. Air column 3. air in throat
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| How is the pitch of a sound related to frequency? | We describe how we hear frequency as pitch.
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| What is the normal range of sound frequencies that young people can hear? | 20-20,000 HZ
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| What happens to our range of hearing as we age? | We lose hearing in the higher frequencies first.
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| Describe what happens to aire as a sound wave moves through it. | Molecules are compressed and then become more spread out (rarefied) in the same frequency pattern as the frequency of the vibrating source.
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cdeutsch
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