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13 Cards in this Set
- Front
- Back
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An object must ___ to produce sound. |
vibrate |
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An object vibrates when it moves __ and ___. |
back, forth |
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____ describes how loud or soft a sound is. |
Loudness |
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A sound can have a ___ ___ or a ____ ____. |
high pitch, low pitch |
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A sound's pitch depends on how quickly the object ____. |
vibrates |
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Objects that vibrate slowly make a sound with a ____ ____. |
low pitch |
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Sound moves fastest through ___ objects. |
solid |
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Sound travels faster through ___ than it does through ___. |
liquids, air |
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Sound moves the most slowly through ___-. |
gases |
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Animals make sounds in different ____. |
different |
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Animals use parts of their _____ to make ____. |
bodies, sounds |
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Every day things make ____. |
sounds |
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Loud sounds like a ___ ___ or ____ on the loudspeaker and soft sounds like a friend ____ or paper being ____ are sounds you hear at ____. |
fire alarm, announcement, whispering, crumpled, school. |
