Types of Rocks

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What are Igneous rocks?

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Rocks formed from the cooling and solidification of molten material (magma or lava). They can be classified as intrusive (cooling inside the Earth) or extrusive (cooling outside the Earth).

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What are Intrusive Igneous rocks?

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Igneous rocks that cool slowly beneath the Earth's surface, allowing large crystals to form. Example: Granite.

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What are Extrusive Igneous rocks?

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Igneous rocks that cool quickly on the Earth's surface, resulting in small or no crystals. Example: Basalt.

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What are Sedimentary rocks?

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Rocks formed from the accumulation and cementation of mineral and organic particles, often found in layers. Example: Sandstone.

Tags

NGSS.MS-ESS1-4

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What are Metamorphic rocks?

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Rocks that have been transformed by heat, pressure, or chemically active fluids, resulting in changes in mineral composition and texture. Example: Marble.

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What is the process of sedimentation?

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The process by which sediments settle out of a fluid (like water) and accumulate, leading to the formation of sedimentary rocks.

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What is the rock cycle?

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The continuous process by which rocks are formed, broken down, and reformed through geological processes, including igneous, sedimentary, and metamorphic transformations.

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What is the difference between weathering and erosion?

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Weathering is the breakdown of rocks into smaller pieces, while erosion is the movement of those pieces from one location to another.

Tags

NGSS.MS-ESS2-2

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What are fossils?

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Remains or traces of ancient organisms preserved in sedimentary rocks, providing evidence of past life.

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NGSS.MS-LS4-1

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What is metamorphism?

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The process by which existing rocks are changed into metamorphic rocks due to heat, pressure, or chemically active fluids.