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Expansion & Contraction

Posted by JS McKee,Sr. on March 11th, 2003 08:02 AM
In reply to science by Breanna on February 9th, 2003 09:00 PM [Go to top of thread]

For Breanna,s question:
The most noticible force that causes changes in size of most materials is a change in the surrounding temperature. But porous materials can absorb humidity (moisture), then change back to near original size when dry.

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