Core - correct answer the innermost zone of Earth's interior, composed mostly of iron and nickel. It includes a liquid outer layer and a solid inner
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Mantle - correct answer The layer of Earth above the core, containing magma.
Magma - correct answer molten rock
Asthenosphere - correct answer The layer of Earth located in the outer part of the mantle, composed of semi-molten rock.
Lithosphere - correct answer The outermost layer of Earth, including the mantle and crust.
Crust - correct answer In geology, the chemically distinct outermost layer of the lithosphere.
Plate tectonics - correct answer The theory that the lithosphere of Earth is divided into plates, most of which are in constant motion.
Tectonic cycle - correct answer the sum of the processes that build up and break down the lithosphere
Subduction - correct answer The process of one crustal plate passing under another
Volcano - correct answer A vent in the surface of Earth that emits ash, gases, or molten lava.
Hot spot - correct answer In geology, a place where molten material from Earth's mantle reaches the lithosphere.
Divergent plate boundary - correct answer an area beneath the ocean where tectonic plates move away from each other
Seafloor spreading - correct answer The formation of new ocean crust as a result of magma pushing upward and outward from Earth's mantle to the surface.
Convergent plate boundary - correct answer an area where plates move toward one another and collide
Transform fault boundary - correct answer an area where tectonic plates move sideways past each other
Fault - correct answer a fracture in rock caused by a movement of Earth's crust
Seismic activity - correct answer the frequency and intensity of earthquakes experienced over time
Fault zone - correct answer a large expanse of rock where a fault has occurred
Earthquake - correct answer The sudden movement of Earth's crust caused by a release of potential energy along a geologic fault and usually causing a vibration or trembling at Earth's surface.
Epicenter - correct answer The exact point on the surface of Earth directly above the location where rock ruptures during an earthquake.
Richter scale - correct answer a scale that measures the largest ground movement that occurs during an earthquake
Rock cycle - correct answer the geologic cycle governing the constant formation, alteration, and destruction of rock material that results from tectonics, weathering, and erosion, among other processes.
Igneous rock - correct answer rock formed directly from magma [Show Less]