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Monday, 7 February 2011

Rock Hardness

UPDATE: I have now changed this link to take you directly to the game: Try it again!

Remember the lesson we spent scratching rocks? Well here is a game in which you have to scratch the rock then use what you learn to choose a drill bit.

The numbers the game uses are from Moh's Hardness Scale. You don't need to learn them but it is useful to know that they exist.

Enjoy.

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