Lecture 5: Igneous Rocks and the Rock Cycle

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What is the process called when molten material cools and solidifies to form igneous rocks?

Crystallization

Where do mantle plumes, which contribute to the formation of igneous rocks, originate from?

Deep in the mantle

What is formed by partial melting of the lower part of Earth's crust or the upper part of the mantle under special conditions of heat, pressure, and composition?

Magma

What is the main component of the liquid portion of magma that forms igneous rocks?

Silicon and oxygen ions

Which factor is NOT a classification of igneous rocks?

Size of crystals

Learn about igneous rocks, their formation from cooling magma, and the rock cycle in this lecture. Understand the process of crystallization and the composition of igneous rocks.

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