Rocks (Book)

This chapter discusses the rock cycle and each of the three major types of rocks that form on Earth. Separate sections cover igneous, sedimentary, and metamorphic rocks individually.

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IGNEOUS ROCKS

Lesson Summary

  • Igneous rocks form either when they cool very slowly deep within the Earth or when magma cools rapidly at the Earth's surface.
  • Composition of the magma will determine the minerals that will crystallize forming different types of igneous rocks.