3 Types of Rocks and the Rock Cycle: Igneous, Sedimentary, Metamorphic - FreeSchool
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Summary
Rocks are classified into three main types: Igneous, Sedimentary, and Metamorphic. Igneous rocks form from cooled magma or lava, sedimentary rocks from compressed sediment, and metamorphic rocks from heat and pressure. The rock cycle describes how rocks change forms, starting from magma to igneous, then to sedimentary, and finally to metamorphic rocks.