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

  • There are three main types of rocks: igneous, sedimentary, and metamorphic.
  • Melting and later cooling, erosion and sedimentation, and metamorphism transform one type of rock into another type of rock or change sediments into rock.
  • The rock cycle describes the transformations of one type of rock to another.