Rock Cycle Diagram Project

Caroline Crawford & Jillian Fleming

The Three Types of Rocks

What is a Metamorphic Rock?

"A metamorphic rock is a result of a transformation of a pre-existing rock. The original rock is subjected to very high heat and pressure, which cause obvious physical and/or chemical changes. Examples of theserock types include marble, slate, gneiss, schist." http://www.onegeology.org/extra/kids/metamorphic.html


What is a Sedimentary Rock?

"Sedimentary rocks are formed by sediment that is deposited over time, usually as layers at the bottom of lakes and oceans." http://www.sciencekids.co.nz/sciencefacts/earth/sedimentaryrocks.html


What is a Igneous Rock?

"Igneous rock is formed through the cooling and solidification of magma or lava." https://en.wikipedia.org/wiki/Igneous_rock

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Vocabulary For The Rock Cycle

Weathering: Wearing away or changing the appearance or texture of something by long exposure to air.


Erosion: The process by which wind, water, ice, or gravity transports soil and sediment from one location to another


Deposition: The process in which material is laid down


Compaction: The process by which the porosity of a given form of sediment is decreased as a result of its mineral grains being squeezed together by the weight of overlaying sediment of by mechanical means.


Cementation: The binding together of particles or other things by cement.


Heat: To cause something to be warm or hot


Pressure: The action of pressing or pushing against something


Melting: Changing its temperature, pressure, and water content. This creates the liquid form of a rock.


Cooling: For something to become less hot.


Sediment: Matter that settles to the bottom of a liquid; dregs.


Magma: A very hot layer of liquid inside the Earth's crust that can form Igneous rocks from the liquid cooling.

Examples of Metamorphic Rocks...

  • anthracite
  • quartzite
  • marble
  • slate
  • granulite
  • gneiss
  • schist
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Examples of Sedimentary Rocks...

  • breccia
  • conglomerate
  • sandstone
  • siltstone
  • shale

(The rocks listed above are mainly formed from mechanical weathering debris.)

Pictures & Information

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Examples of Igneous Rocks...

  • basalt
  • rhyolite
  • andesite
  • obsidian.
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How is a rock made?

The rocks that form Earth’s crust are continually destroyed and remade in an endless process called the rock cycle. Rock is formed by melting; by cooling and solidifying; by changing through heat and pressure; by weathering and erosion; and by compression and cementation. http://www.infoplease.com/dk/encyclopedia/rocks.html
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How is a metamorphic rock formed?

are created by the physical or chemical alteration by heat and pressure of an existing igneous or sedimentary material into a denser form. http://earth.rice.edu/mtpe/geo/geosphere/topics/rocks/30_rocks_metamorphic1.html

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How is a Sedimentary rock formed?

when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formedwhen weathering and erosion break down arock into loose material in a source area https://en.wikipedia.org/wiki/Sedimentary_rock

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How is a Igneous rock formed?

through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic)rocks or on the surface as extrusive (volcanic)rocks. https://en.wikipedia.org/wiki/Igneous_rock

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