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


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