Types of Rocks

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What is an igneous rock?

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An igneous rock is formed when molten magma cools and solidifies. It can form underground or above ground.

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What is a sedimentary rock?

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A sedimentary rock is formed from smaller pieces of rock, minerals, and organic materials that settle and compact over time, often in water.

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What is a metamorphic rock?

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A metamorphic rock is formed when an existing rock type (igneous, sedimentary, or another metamorphic rock) is changed by heat, pressure, or chemical processes.

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How are igneous rocks formed?

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Igneous rocks are formed when magma cools and solidifies, either beneath the Earth's surface or after a volcanic eruption.

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What is the process of sedimentation?

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Sedimentation is the process where particles settle out of a fluid (like water) and accumulate to form sedimentary rocks.

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NGSS.MS-ESS1-4

NGSS.MS-ESS2-1

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Can you name an example of an igneous rock?

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An example of an igneous rock is granite.

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Can you name an example of a sedimentary rock?

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An example of a sedimentary rock is sandstone.

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Can you name an example of a metamorphic rock?

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An example of a metamorphic rock is marble.

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What is the rock cycle?

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The rock cycle is the continuous process of rock formation and transformation, where igneous, sedimentary, and metamorphic rocks change from one type to another.

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What happens to rocks under high pressure?

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Under high pressure, rocks can change into metamorphic rocks.