Friday, December 17, 2010

Metamorphic Rocks

There are 3 rock groups. The first group is called Metamorphic rocks. They are made of other kinds of rocks. A rock changes if it is squeezed very very very hard. Rocks that are near magma can get very hot. but they don't melt it's not that hot. but the heat might change the minerals in the rocks. if the minerals change it becomes a Metamorphic rock.

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