Three Types of Rocks

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What is an Igneous Rock?

Back

A type of rock that forms from the cooling of magma at or below the surface of the earth.

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What is a Metamorphic Rock?

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A type of rock that is formed or changed by heat and pressure.

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What is a Sedimentary Rock?

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A type of rock that forms when small particles of rocks (sediments) are pressed and cemented together.

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What is Erosion?

Back

The movement of broken down rocks.

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How do Igneous Rocks form?

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They form from the cooling and solidification of magma or lava.

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What are the two types of Igneous Rocks?

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Intrusive (formed inside the Earth) and Extrusive (formed on the surface).

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What is the process of Sedimentation?

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The process where sediments settle out of water or air and accumulate.

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What is the Rock Cycle?

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The continuous process by which rocks are created, changed, destroyed, and reformed.

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What is the difference between Intrusive and Extrusive Igneous Rocks?

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Intrusive rocks cool slowly beneath the Earth's surface, while extrusive rocks cool quickly on the surface.

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What are fossils?

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Remains or traces of ancient living organisms found in sedimentary rocks.