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Study
Science U9 Sound
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When we pluck a guitar string, it ______ making sound.
vibrates
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Loud sounds can ______ our ears.
damage
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Sound travels slower when moving through a _____ because there are less molecules.
gas
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Sound is when ________ travel through a medium.
vibrations
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Our ears are designed to detect sound moving through _____.
air
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Moving faster than the speed of sound creates a loud noise called a ______.
sonic boom
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Sound waves travel faster when moving through a _________ because there are more molecules.
solid
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Light travels ______ than sound.
faster
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The further we are from a sound, the _____ it sounds.
softer
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We can use the time a sound takes to reach us to measure ________.
distance
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The speed of sound is roughly ______m/s.
300
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Large vibrations create ______ sounds.
loud
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Small vibrations create _____ sounds.
soft
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The closer we are to a sound, the _____ it sounds.
louder
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When we hit a drum, the skin ______ making sound.
vibrates
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We can use our fingers, earplugs, or earmuffs to _____ our ears.
protect
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