Rocks
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Transcript of Rocks
![Page 1: Rocks](https://reader035.fdocuments.us/reader035/viewer/2022062617/54b937de4a7959064f8b45d8/html5/thumbnails/1.jpg)
RocksIgneous, Sedimentary and Metamorphic
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What is a Rock? The material that forms Earth’s hard
surface (crust)
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Essential Questions How are rocks and minerals different?
Rocks can be made from various minerals and other materials, while minerals must have a definite composition.
What are the three types of rocks? Igneous - sedimentary -
metamorphic How are rocks formed?
Rocks are made from mixtures of minerals and other materials.
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Sedimentary Rock Definition
A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together.
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Sedimentary Rocks FACTS
Fours steps to be formed Erosion Deposition Compaction Cementation
Examples: Limestone, sandstone, shale
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Igneous Rocks Definition
A type of rock that forms from the cooling of molten rock at or below Earth’s surface
~ “ignis” means fire in Latin
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Igneous Rocks Facts
Can be “intrusive” forms Inside earth’s interior
Can be “extrusive” forms on top of earth’s surface (Exterior)
Forms from cooled magma or lava Examples
Granite, basalt, pumice
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Metamorphic Rock Definition
A type of rock that forms from an existing rock that is changed by heat, pressure or chemical reactions
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Metamorphic Rock Facts
Form deep below earth’s surface Any type of rock can eventually “morph”
into a metamorphic rock Examples
Marble, slate