Rock Types

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What is magma?

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Magma is molten rock located beneath the Earth's surface. It forms when heat and pressure cause rocks to melt.

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What type of rock forms from cooled magma?

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Igneous rock forms from cooled magma.

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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 (formed inside the Earth) and extrusive (formed on the Earth's surface).

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What is an example of an extrusive igneous rock?

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An example of an extrusive igneous rock is basalt.

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What is an example of an intrusive igneous rock?

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An example of an intrusive igneous rock is granite.

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What are sedimentary rocks?

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Sedimentary rocks are formed from the accumulation and compaction of mineral and organic particles.

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What are the three main types of sedimentary rocks?

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The three main types of sedimentary rocks are clastic, chemical, and organic.

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What is a clastic rock?

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Clastic rocks are formed from fragments of other rocks that have been cemented together.

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What is a chemical sedimentary rock?

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Chemical sedimentary rocks form when minerals precipitate from solution, often due to evaporation.

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What is an organic sedimentary rock?

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Organic sedimentary rocks are formed from the remains of living organisms, such as coal from plant material.