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Rock Vocabulary

TermDefinition
Core Earth’s center, made up of a liquid outer core and a solid inner core.
Crust The thin outer layer of earth.
Magma Melted liquid rock beneath Earth’s surface.
Mantle The semi-solid layer of Earth that lies between the crust and the core
Volcano A place in Earth’s crust where gases, ash, and lava spew onto the surface.
Continent The main landmasses on Earth such as Africa, North America, and Asia.
Continental Drift The theory stating that continents are continually moving.
Convergent boundary Boundary where two plates push together (often makes mountains).
Divergent boundary Boundary where two plates push away from each other (creates trenches).
Earthquake The shaking of ground caused by sudden jolts of plate movement
Plates Large sheets of rocks that make up Earth’s crust.
Transform boundary Where two plate slide along each other.
Chemical Weathering A change in rock as it reacts with different liquids and gases.
Deposition the process of dropping sediments to a new place
Erosion the process of transporting sediments by water, wind, ice or gravity.
Igneous rock rock formed by the hardening of hot, molten magma
Mechanical Weathering The physical breaking of rock by wind, water, and ice.
Metamorphic rock rock formed when igneous or sedimentary rock is put under extreme heat and pressure.
Rock solid natural material made of minerals
Sediment particles of weathered rock (sand/soil)
Sedimentary rock rock formed when sediment is compacted
Fossils Preserved remains of an organism found in rock
Superposition The theory that sedimentary rock on bottom is older than rock above it.
Relative age Comparison of age to determine which is older or younger. (No exact number)
Absolute age The exact numerical age
Created by: DMason18
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