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Contents contributed and discussions participated by Solveig Perrett
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Solveig Perrett
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Using Mohs' Hardness scale for fun
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www.fossweb.com/...mohsdrill.html
Science
EarthScience
Interactive
Mohs
Scale
shared by
Solveig Perrett
on 17 Jan 14
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Solveig Perrett
on 17 Jan 14
students use the hardness scale to pick drill bits to escape the Castle of Doom. I had fun.
students use the hardness scale to pick drill bits to escape the Castle of Doom. I had fun.
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Solveig Perrett