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Sounds are made when things _______________
Vibrate
a very quick movement back and forth is called ________
Vibration
Variable that you keep the same through investigation is called ___________ variable
Control
Variable that you change is called ___________ variable
Independent
Variable that you measure or observe is called ___________ variable
Dependent
Which material do you hear the sound the best through? Solid/liquid/gas
Solid
Sound can travel through water. (True/false)
True
Sound can travel through gas. (True/false)
True
Sound can travel through vacuum. (True/false)
False
How loud or quiet the sound is called _________
Volume
How high or low the sound is called _________
Pitch
We measure the sound with unit of __________
decibel (dB)
Slow vibration produce a lower / higher pitched sound.
lower
Fast vibration produce a lower / higher pitched sound.
higher
Bats use very low / high pitched sound.
high
Elephants use very low / high pitched sound.
low
