Rocks & Minerals

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What are Intrusive Igneous rocks?

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Rocks formed from magma that cools slowly beneath the Earth's surface.

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What is the texture of igneous rocks that cool very fast?

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They have a fine-grained texture with no visible crystals.

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What is the texture of Extrusive igneous rocks?

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Extrusive igneous rocks have a fine-grained texture.

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What does it mean if a sedimentary rock is sorted?

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It means that the sediments are all the same size.

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What does it mean if a sedimentary rock is unsorted?

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It means that the sediments are of different sizes.

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What are Foliated metamorphic rocks?

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Metamorphic rocks that have a layered or banded appearance due to the alignment of minerals.

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What are Unfoliated metamorphic rocks?

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Metamorphic rocks that do not have a layered appearance.

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What is the process of sedimentation?

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The process by which sediments settle out of a fluid, such as water or air.

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What is the difference between mafic and felsic rocks?

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Mafic rocks are rich in magnesium and iron, while felsic rocks are rich in silica and aluminum.

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What is the rock cycle?

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The continuous process of rock formation and transformation through igneous, sedimentary, and metamorphic processes.