The Rock Cycle

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The Rock Cycle
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A Cycle of Many Pathways

• KEY CONCEPT Forces deep inside the Earth and at
  the surface produce a slow cycle that builds,
  destroys, and changes rocks in the crust.
• Igneous rock is turned into sediment by erosion.
  The sediment is deposited and slowly becomes
  sedimentary rock.
• The sedimentary rock is buried by more sediment
  and heat and pressure cause it to change into
  metamorphic rock.
• Metamorphic rock is forced into the mantle and
  melts forming magma. Magma erupts and cools to
  form igneous rock again.

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How Does it Work?