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The rock cycle describes the constant process in which the three main types of rock--sedimentary, metamorphic and igneous--are broken down and transformed into each other.


The rock cycle is a basic concept in geology that describes the time-consuming transitions through geologic time among the three main rock types: sedimentary,  ...


The Rock Cycle is a group of changes. Igneous rock can change into sedimentary rock or into metamorphic rock. Sedimentary rock can change into ...


Rocks are the most common material on Earth. They are naturally occurring aggregates of one or more minerals. Rock divisions occur in three major families  ...


Interactives -- Rock Cycle, Pick another interactive: ... collection as you learn about the three main types of rock, find out how to tell the different rock types apart, ...


The Rock Cycle Written for the KidsKnowIt Network by: Brandon Guymon. There are three main types of rocks: igneous, sedimentary, and metamorphic. Each of ...


The Rock Cycle is a model that describes how rocks change from one form to another.


In this BrainPOP movie, Tim and Moby explain how one type of rock can actually become another! You'll learn about the three types of rock: Igneous, ...


Feb 24, 2012 ... Presents the three major rock types and the rock cycle.


The rock cycle is the entire journey rocks make as they change. These take millions of years.. Find out more.