Rocks

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What is rock salt (halite)?

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A type of sedimentary rock that forms when water evaporates, leaving behind salt.

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How does rock salt (halite) form?

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Rock salt forms when water evaporates.

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What is igneous rock?

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Rock that forms as molten rock cools and becomes solid.

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What are extrusive igneous rocks?

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Igneous rocks that form as lava cools on Earth's surface.

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What are intrusive igneous rocks?

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Igneous rocks that form from magma cooling beneath the Earth's surface.

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What is sedimentary rock?

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Rock formed from the accumulation of sediments, which can include minerals, organic material, and fragments of other rocks.

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What is metamorphic rock?

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Rock formed as heat or pressure causes a change in existing rock.

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What is an example of sedimentary rock?

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Sandstone, limestone, and shale are examples of sedimentary rock.

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What can preserved mud cracks in sedimentary rock indicate?

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They can provide information about past environmental conditions, such as dry periods.

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What is the rock cycle?

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The continuous process of rock formation and transformation between igneous, sedimentary, and metamorphic rocks.