Metamorphic Rock
Formed deep underground where heat and pressure cause existing rocks to be changed.
Magma
Melted or molten rock material under the Earth's surface, cools slowly with larger crystals.
Lava
Molten rock or magma that has reached the Earth's surface, rapid cooling small crystals.
Igneous Rock
Formed when lava or magma cools and solidifies. Lava cools quickly, magma cools slowly.
Rock Cycle
Earth's rocks change from one type into another over time due to various Earth's processes.
Cementation
Occurs when compacted sediments stick together and turn into rock.
Compaction
Occurs when rock particles are pressed together or packed down by gravity and overlying rocks.
Sedimentary Rock
Rocks form when particles of other rocks are deposited in layers and are compacted and cemented together.
Heat and Pressure
Changing variables due to the weight of overlying rocks, forming metamorphic rock.
Sedimentation
the deposition of solid material being suspended in a fluid (water).