Minerals and Rocks Review

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What is sedimentary rock?

Back

Sedimentary rock is formed when rock fragments, minerals, and the remains of plants and animals are deposited as sediments and are then compacted and cemented together.

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What type of rock is granite?

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Granite is an igneous rock that forms when magma deep below the Earth's crust cools off and hardens.

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What are igneous rocks?

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Igneous rocks are formed by the cooling and hardening of magma and lava.

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What is the Mohs hardness scale?

Back

The Mohs hardness scale is a scale that ranks ten common minerals from softest to hardest, with diamond being the hardest at a hardness of 10.

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What are rocks composed of?

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Rocks are composed of different types of minerals.

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What is the process of compaction in sedimentary rock formation?

Back

Compaction is the process where sediments are pressed together under the weight of overlying materials.

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What is cementation in sedimentary rock formation?

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Cementation is the process where dissolved minerals crystallize and bind sediment particles together.

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What is the difference between igneous and sedimentary rocks?

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Igneous rocks form from cooled magma or lava, while sedimentary rocks form from the accumulation and compaction of sediments.

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What is metamorphic rock?

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Metamorphic rock is formed when existing rocks are changed by heat, pressure, or chemically active fluids.

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What is an example of an igneous rock?

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An example of an igneous rock is basalt.