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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Lesson Summary

  • Metamorphic rocks form when heat and pressure transform an existing rock into a new rock.
  • Contact metamorphism occurs when hot magma transforms rock that it contacts.
  • Regional metamorphism transforms large areas of existing rocks under the tremendous heat and pressure created by tectonic forces.