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6th grade Rocks

TermDefinition
basaltic rocks dense dark colored igneous rock that form from magma that is rich in magnesium and iron, and low in silica
chemical sedimentary rocks sedimentary rock that is formed when dissolved minerals come out of a solution
clastic sedimentary rocks formed from weathered sediments that have been cemented together.
extrusive rocks igneous rocks that are formed from cooling lava
intrusive rocks igneous rocks that are formed from cooling magma
foliated rocks metamorphic rocks that have mineral grains that line up in parallel layers
granitic rocks light colored igneous rock that have a low density and high silica
igneous rock forms when molten rock cools and hardens
metamorphic rocks rocks that have changed due to intense heat and pressure
organic sedimentary rocks rocks that are made up of once- living things
rock made up of two or more minerals
rock cycle used to explain the endless cycle of change that rock undergoes as they change from one type to another
sedimentary rock forms when sediments are compressed compacted and cemented together, or when minerals form in a solution
Created by: brechbillc
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