Types of Rocks

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What are Intrusive Rocks?

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Intrusive rocks are a type of igneous rock that forms when molten rock cools slowly beneath the Earth's surface.

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What are Nonfoliated Rocks?

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Nonfoliated rocks are a type of metamorphic rock that do not have a layered or banded appearance.

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What are Clastic Rocks?

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Clastic rocks are a type of sedimentary rock formed from fragments of other rocks that have been compacted and cemented together.

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How are Extrusive Rocks formed?

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Extrusive rocks are formed when molten rock cools rapidly on the Earth's surface.

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Where do Extrusive Rocks form?

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Extrusive rocks form above the surface of the Earth.

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What is the main characteristic of Igneous Rocks?

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Igneous rocks are characterized by their formation from the cooling and solidification of molten rock.

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What is the difference between Intrusive and Extrusive 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 the two main types of Igneous Rocks?

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The two main types of igneous rocks are intrusive (plutonic) and extrusive (volcanic) rocks.

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What is a common example of a Clastic Rock?

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A common example of a clastic rock is sandstone, which is made up of sand-sized particles.

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What is the process of sedimentation?

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Sedimentation is the process by which sediments settle out of a fluid, such as water or air, and accumulate to form sedimentary rocks.

Tags

NGSS.MS-ESS2-1