Rocks and the Rock Cycle. Rock is a solid material made up of minerals or other substances.Rock is a...
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Transcript of Rocks and the Rock Cycle. Rock is a solid material made up of minerals or other substances.Rock is a...
![Page 1: Rocks and the Rock Cycle. Rock is a solid material made up of minerals or other substances.Rock is a solid material made up of minerals or other substances.](https://reader035.fdocuments.net/reader035/viewer/2022062803/56649f055503460f94c1a407/html5/thumbnails/1.jpg)
Rocks and the Rock
Cycle
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•Rock is a solid material made up of minerals or other substances.
•Most of Earth’s rocks are made up of about 20 common minerals, called rock-forming minerals.
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•The color of the rock depends on the color of the minerals that make up the rock.
•To a geologist, texture refers to the size, shape, and arrangement of a rock’s grains.A rock grain is one of the
particles that make up a rock•Geologists classify rocks into three major groups by how they are formed.
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•Igneous rock forms when lava or magma cools and hardens.
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•Igneous rock formed from magma beneath the Earth’s surface is called intrusive.
Intrusive – Inside the Earth
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•Igneous rock formed from lava above the Earth’s surface is called extrusive.
Extrusive – Exited the Earth
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•Sedimentary rock forms when particles of rock and other material are pressed and stuck together.
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•Compaction (pressed)
•Cementation (stuck)
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•Any rock can become Sedimentary Rock
•There are three major kinds of sedimentary rock
Clastic – Organic – Chemical
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•A sedimentary rock that you can see the particles of rock that have been stuck together is called a clastic rock.
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•A sedimentary rock that formed from the remains of plants and animals is called organic rock.
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•A sedimentary rock that forms when dissolved minerals come out of solution is called a chemical rock.
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•Metamorphic rock forms from high heat and pressure beneath the surface of the Earth.
•Any type of rock can become a metamorphic rock.
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•The rock cycle is a series of processes that change rocks from one kind to another kind.
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Explain the Rock Cycle
Begins sedimentary metamorphic igneous
How It Changes
Ends metamorphic sedimentary sedimentary