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Sound
Sound
10
Science
4th Grade
09/12/2011

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Cards

Term
What causes sound?
Definition
Vibrations.
Term
What pitch do you her frm a short string or bar?
Definition
A high pitch that vibrates quickly.
Term
Wht pitch do you hear from a long string or bar?
Definition
A low pitch that vibrates slowly.
Term
Fast vibrations make what kind of sound?
Definition
High.
Term
Slow vibrations make what kind of sound?
Definition
Low.
Term
How does tension affect pitch?
Definition
The greater the tension the higher the pitch?
Term
Does sound travel best through solids,liquids or gases and why?
Definition
Liquids because it's louder.
Term
How can you amplify sound?
Definition
With a tube or megaphone.
Term
How do ears assist hearing?
Definition
Direct and amplify sounds.
Term
What must sound have to be heard.
Definition
Source,reciever and a medium to travel through.
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