1. The Rock Cycle

2. 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.

3. How Does it Work?