Subject: Why would more sound travel through two materials than one alone?
Date: Wed Nov 15 12:59:48 2006
Posted by Ian B.
Grade level: 7-9
School: New Community School
City: Richmond State/Province: Va
Country: United States
Area of science: Physics
ID: 1163620788.Ph
Message:
In a school science experiment, I lined a 3/4" plywood box with 1" styrofoam
inside, put a speaker inside sealed the box and measured sound in dB using a
microphone 4" away from the outside of the box. More sound registered wihen I
used the styrofoam inside the box, than just the plywood box itself. Can you
explain this. Does styrofoam amplfy certain ranges of sound???
Re: Why would more sound travel through two materials than one alone?
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