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Seience rock guide

rock tests

TermsDefinitions
Texture The look and feel of a rock's surface, determined by the size,shape,and pattern of the rock's grains.
Grain A particle of mineral or other rock that gives a rock its texture.
Igneous Rock A type of rock that forms from the cooling of molten rock at or below the surface.
Metamorphic Rock A type of rock that forms from an existing rock that is cahnged by heat,pressure,or a chemical reaction.
Sedimentary Rock A type of rock that forms when particles from other rocks or the remains of plantes and animels are pressed and cemented together
Exstrusive Rock Ignueus that forms from lava on earth's surface.
Intrusive Rock Igneous rock that forms when magma hardens beneath earth's surface.
Porphyritic Rock An igneous rock in which large crystals are scatterd on the background of much smaller crystals.
Sedament Small,solid pieces of material that comes from rock or organisms.
Erosion The destructive proces in which water or wind loosen and carry away fragments of rock.
Deposition The process by which sedament settles out of the water or wind that is carrying.
Compaction The process by which sediments are pressed together under their own weight.
Cementation The process by which dissolved minerals crystallize and glue together into one mass.
Clastic Rock Sedimentary rock that forms when rock fragments are squeezzed together under high pressure.
Organic Rock Sedimentary rock that forms where remains of organisms are deposited in thick layers.
Chemical Rock Sedimentary rock that forms when minerals crystallize from a solution.
Foliated Metamorphic rocks whose grains are arranged in parallel layers or bands.
Nonfoliated Metamorphic rocks with no bands or parallel layers
Rock Cycle A series of processes on the surface and inside earth that slowly change rocks from one kind to another
Created by: nickodo1
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