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__________ vibrations cause soft sounds.
Small.
Give an example of a percussion instrument.
Drums, shakers, and rattles.
How do you raise the pitch on a stringed instrument, such as a guitar?
By making the string thinner, shorter, or tighter.
The __________ the vibrations, the higher the pitch of the sound.
faster.
What is pitch?
Pitch is how high or how low a sound is.
Name two ways we can muffle sounds.
Ear defenders, silencers on cars, carpets, curtains
What is the unit we use to measure sound?
A decibel (dB)
What do we use to measure sound?
A sound level meter.
A sound is louder when the vibrations are _____________.
Bigger.
Give an example of a soft sound.
Any soft sound.
Give an example of a loud sound.
Any loud sound.
What causes sound?
Vibrations.
Does sound travel best through a solid, a liquid, or a gas?
A solid.
You hear an aeroplane passing overhead. What is the source of the sound?
The aeroplane.