Rocks (Book): Lesson Summary

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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TYPE OF ROCKS

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.