Weathering		The transfer of energy from one body to another as a result of a difference in temperature or a change in phase.
Rock Cycle		Rocks formed by the cooling and solidifying of molten materials. Igneous rocks can form beneath the Earth's surface, or at its surface, as lava.
Igneous Rock		The molten rock material under the earth's crust, from which igneous rock is formed by cooling.
Magma		To make less warm.
Crystallization		Rock that was once one form of rock but has changed to another under the influence of heat, pressure, or some other agent without passing through a liquid phase.
Heat		The act or an instance of transporting.
Pressure		The process by which rocks are formed, altered, destroyed, and reformed by geological processes and which is recurrent, returning to a starting point.
Cementation		A naturally occurring, homogeneous inorganic solid substance having a definite chemical composition and characteristic crystalline structure, color, and hardness.
Melting		Solid fragments of inorganic or organic material that come from the weathering of rock and are carried and deposited by wind, water, or ice.
Deposition		To be changed from a solid to a liquid state especially by the application of heat.
Metamorphic Rock		Rock that has formed through the deposition and solidification of sediment, especially sediment transported by water (rivers, lakes, and oceans), ice (glaciers), and wind. Sedimentary rocks are often deposited in layers, and frequently contain fossils.
Cooling		The act of depositing, especially the laying down of matter by a natural process.
Sedimentary Rock		To raise; elevate.
Compaction		The process of compacting or the state of being compacted.
Erosion		The application of continuous force by one body on another that it is touching; compression.
Uplift		Molten rock that reaches the earth's surface through a volcano or fissure.
Lava		The group of natural processes, including weathering, dissolution, abrasion, corrosion, and transportation, by which material is worn away from the earth's surface.
Sediment		The act, process, or result of cementing.
Mineral		To cause to form crystals or assume a crystalline structure.
Transportation		Any of the chemical or mechanical processes by which rocks exposed to the weather undergo changes in character and break down.