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Science 2

Rock Mixture of such minerals,rock fragments, volcanic glass,organic matter,or other natural materials
Rock cycle illustrates the process that creates and changes rocks
Igneous rock magma cooled and hardened
lava When magma reaches earth's surface
Extrusive Lava cools on the surface of earth
Basaltic dense, dark colored igneous rocks that dorm from mama rich in iron and magnesium
Granite Light colored rocks of a lower density than basaltic rocks
Metamorphic rocks Rocks that have changed because of changes in the temperature and pressure or the presence of hot, watery fluids
Foilated When mineral grains line up in parallel layers
Nonfoilated Metamorphic rocks with no layers
Sediment Loose materials such as rock fragments, mineral grains,and bits of shells
Sedimentary rocks Forms when sediments are pressed and cemented together
Compaction When small sediments push up against each other and dorm solid rock
Cementation When large sediments stick together because of weathering
3 types of rocks Igneous, sedimentary,metamorphic
Source of igneous rocks Magma
Magma molten material below the earth's surface
Intrusive Cooling of magma to form mineral grains that grow together to form solid rock below the earth's surface
Common intrusive igneous rocks Gabbro,diorite,granite
Andesite Higher density than granitic rocks but lower density than basaltic rocks
Weathering The physical or chemical breakdown of existing rock
Created by: demigodravenclaw