igneous sedimentary
100
What is igneous?
rock formed when melted rock cools in earth.
100
What is detriatial rock?
rocks made of grains of minerals or other rock.
200
What is extrusive rock?
rock material cooled on earths surface.
200
What is sedimentary rock?
rock formed from smaller rocks or minerals.
300
What is intrusive rock?
melted rock cools below earths surface.
300
What is organic rocks
coal a common kind of this rock for electricity.
400
What is chemical composition?
the chemicals in rock that determine the color.
500
What is fissures?
large cracks in earths crust.






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