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Force and Sound
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The quality of sound that allows us to identify its source
timbre
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The unit used to measure volume
Decibels
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Types of object that can break
rigid
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What part of our body do we use to speak and sing?
vocal cords
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When an object moves against air or water it is called
resistance
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Why is it harder to walk in water?
because of resistance
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What is the force that slows down and stops a moving object when it is in contact with another object?
friction
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What is it called when there is so much noise that it affects our hearing?
noise pollution
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The volume of a sound
intensity
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When a sound hits a distant obstacle and the sound is reflected back to our ears
echo
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If an object is moving, it will continue moving until what happens?
Until a force makes it stop or change direction.
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How is sound made?
with vibrations
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Does sound travel faster in liquids or solids?
solids
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The pitch of a sound allows us to tell the difference between _____ and _____ sounds.
high and low
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Some objects can change shape when a ____ acts upon them.
force
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