Rock Cycle

Rock Cycle

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  • An igneous rock forms by the cooling and solidification of lava or magma. These rocks can form either below or above Earth's surface.
  • When igneous rock forms there is heated, molten rock crystallizes and solidifies. For an igneous rock to become a sedimentary rock, weathering and erosion is needed to create sediment.
  • It would take millions of years for a sedimentary rock to form from sediment. The sediment is glued together to make the rock by its own weight.
  • Earth's surface and the remains of animals makes up a sedimentary rock. With heat, pressure, and stress, a sedimentary rock can become a metamorphic rock.
  • An example of an sedimentary rock that turns into a metamorphic rock is limestone changing into marble. Limestone is the sedimentary rock and marble is the metamorphic rock.
  • A metamorphic rock changes into an igneous rock by melting. When this rock melts, it turns into magma. Then the magma can either turn into lava or the magma can cool.  Now this metamorphic rock is now a igneous rock.
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