Erin's Rock Project
By:Erin Comerford
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What are rocks made of?
How to classify rocks
Igneous Rock
Sedimentary Rock
Metamorphic Rock
Rock Cycle
What are rocks made of:
Rocks are made of mostly of crystals of different kinds of minerals, or broken pieces of crystals, or broken pieces of rocks. Some rocks are made of the shells of once-living animals, or of compressed pieces of plants.
Links:
http://geomaps.wr.usgs.gov/parks/rxmin/rock.html
http://www.epd86.org/epweb/LOs/Rocks/what_are_rock_made_from.html
Erin's Rock Project