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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.

Rock cycle - Wikipedia

en.wikipedia.org/wiki/Rock_cycle

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 - NASA Classroom of the Future

www.cotf.edu/ete/modules/msese/earthsysflr/rock.html

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

Interactives . The Rock Cycle . Introduction - Annenberg Learner

www.learner.org/interactives/rockcycle/

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

Interactives . The Rock Cycle . The Rock Cycle - Annenberg Learner

www.learner.org/interactives/rockcycle/diagram.html

A useful way to illustrate how the three main types of rock are related to one another and how changes to rocks happen in a recurring sequence is the rock cycle.

The Rock Cycle | Mineralogy4Kids

www.mineralogy4kids.org/rock-cycle

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  ...

Interactive Rock Cycle Animation - ClassZone

www.classzone.com/cz/redirect/esm05_pg73_es0602-2.html

This cutaway view of Earth shows where some common rock-forming processes occur. Embedded animations will illustrate the path of a rock moving through the  ...

Rock Cycle - BrainPOP

www.brainpop.com/science/earthsystem/rockcycle/

Everything goes in cycles, even rocks! In this BrainPOP movie, Tim and Moby explain how one type of rock can actually become another! You'll explore the three ...

Rock Cycle - Geology For Kids - By KidsGeo.com

www.kidsgeo.com/geology-for-kids/0025B-rock-cycle.php

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 - Rocks and Minerals

www.rocksandminerals.com/rockcycle.htm

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