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Chapter 3 Rocks

Prentice Hallm Earth Science

QuestionAnswer
Why do we study rocks? Because its essential to understanding the Earth.
What is the rock cycle? Interactions among Earth's water, weather, and core.
WhAt is the di.fference Bet,ween Ihntrusiive and Ehxtrusiive Ignius Rokcs/ Intrusive forms in the Earth's interior and extrusive forms of the surface of the Earth.
Is magma hot? No, its actually quite cool. (It is very hot)
What is the Giant's Causeway in Ireland. A place where basalt forms hexagonal forms on the ground.
What is obsidian? An igneous rock.
What is unique about sedimentary rocks? They are smarter than humans. (They have fossils)
What occurs during the formation of sedimentary rocks? Erosion, weathering, deposition, compactation and cementation.
What are the two types of sedimentary rocks? Clastic and chemical.
What are the agents of metamorphism? Heat, pressure, and reactions in solution.
Ebola? eBola.
What are the classifiactions of metamorphic rocks? Foliated and nonfoliated.
What is a nonfoliated metamorhpic rock? A rock that does not have a banded texture.
What are the classifications of igneous rocks? Coarse-Grained texture, fine-grained texture, glassy texture, porphyritic texture, granitic composition, basaltic composition, and other compositional groups.
What are the three types of rocks? Igneous, sedimentary, and metamorphic.
What happens when magma cools and hardens beneath the surface? Igneous rocks form.
What happens when sediments are compacted and cemented? Sedimentary rocks form.
How does magma form? When rock melts deep beneath Earth's surface.
What happens when lava hardens? It creates extrusive igneous rocks.
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