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Unit 3 Vocab by:Niya

Plate Tectonics

TermDefinition
Asthenosphere The upper layer of the earth's mantle.
Subduction where one plate moves under another and is forced to sink.
Seafloor spreading the formation of new areas of oceanic crust.
Mantle convection slow creeping motion of Earth's solid silicate mantle
Ridge push gravitational sliding
Slab pull motion of a tectonic plate caused by its subduction.
Lava molten rock generated by geothermal energy
Magma molten or semi-molten natural material from which all igneous rocks are formed
Tectonic plate larger number of smaller plates of the Earth's lithosphere
Theory of continental drift continents shift position on Earth's surface
Convergent boundary two plates moving toward each other
Divergent boundary two plates moving away from each other
Transform boundary plates slide sideways past each other
Hot spot volcanic regions underlying mantle
Epicenter he point on the earth's surface vertically above the hypocenter
Focus the point where the rocks start to fracture.
Pangaea all current land masses
Geohazard geological and environmental conditions and involve long-term or short-term geological processes
Reverse fault hanging wall has moved upward relative to the footwall
Strike-slip fault zones of lateral displacement within the Earth's crust or lithosphere
Normal fault two blocks of rock are pulled apart
Compression state of being squished down
Tension pulling force transmitted axially by the means of a string
Shearing movement or pressure applied to an object
Felsic denoting a group of light-colored minerals
Mafic silicate mineral or igneous rock that is rich in magnesium and iron
Created by: 23niya
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