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MJHS8 Rocks

MJHS8 Rocks Vocabulary

QuestionAnswer
Summarizes the process of the formation and breakdown of the 3 rock types Rock Cycle
Sedimentary rocks formed from the remains of plants and/or animals Organic
Igneous rock with large crystals surrounded by small crystals; 2 cooling stages Porphyry
Rock formed from an existing rock that is changed by heat and/or pressure Metamorphic rock
Magma that is dark colored, low in silica, and runny Mafic
Magma that is light colored, high in silica, and thick Felsic
Depends on the size, shape, and arrangement of a rock’s crystal grains Texture
Rock formed by the hardening and cementing of layers of sediments Sedimentary rock
A group of minerals bound together in some way Rock
Rock formed by the cooling and hardening of magma or lava Igneous rock
Sedimentary rock formed from fragments (pieces) of other rocks Clastic
Sedimentary rock formed from minerals dissolved in a solution (water) after it has evaporated Chemical
Sedimentary rocks arranged in visible layers Stratification
Occurs when large areas of rock are under heat and pressure Regional metamorphism
Layering of minerals in metamorphic rocks Foliation
Type of igneous rock formed from cooled magma deep underground Intrusive
Type of igneous rock formed from cooled lava on Earth’s surface Extrusive
Texture that describes large, visible mineral crystal grains Coarse-grained
Texture that describes mineral crystal grains that are unable to be seen without a microscope or magnifying lens Fine-grained
Occurs when magma causes the surrounding rocks to change Contact metamorphism
Created by: aaron.blake
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