Lecture 5: Igneous Rocks and the Rock Cycle
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Lecture 5: Igneous Rocks and the Rock Cycle

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Questions and Answers

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

  • Sublimation
  • Crystallization (correct)
  • Deposition
  • Erosion

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

  • Earth's crust
  • Deep in the mantle (correct)
  • Earth's core
  • Deep ocean trenches

    • 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?

  • Volcanic rocks
  • Magma (correct)
  • Plutonic rocks
  • Lava

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

    <p>Silicon and oxygen ions</p> Signup and view all the answers

    Which factor is NOT a classification of igneous rocks?

    <p>Size of crystals</p> Signup and view all the answers

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