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Unit 3 Vocab Skylin

Plate tectonics

TermDefinition
Asthenosphere Sphere in the mantle that contributes to convention
Subduction the movement of plates into the mantle
Seafloor spreading the slow and continuous creation of new oceanic crust
Mantle convention the process of mantle cooling and sinking, only to heat and rise creating currents.
Slab pull the idea that convention is the driving force behind the pulling down of plates
Ridge push Mantle escaping and pushing away of plates is another force of motion
Lava When magma escapes the subduction layer
Magma Lava in the subduction layer
Tectonic plates giant slabs of continental or oceanic crust that move
Theory of continental drift The idea all the continents were once together, but drifted away.
Convergent The tectonic plates moving together.
Divergent Moving away
Transform rubbing against each other
Hot spot where rocks melt to form magma
Epicenter where the earthquake comes from
focus where rocks break
Pangea The super continent formed of all the continents
Geohazard A place where there is a huge risk of injury or death due to geological features
Reverse fault When instead of being thrust down, the land is thrust up.
Strike-slip faut the land is shifted to the side
Fault the land is shifted down
Compression When the rocks are stressed and push against each other
Tension When two rocks stretch in different directions
Shear stress parallel to something
Felsic Igneous rocks rich in elements
Mafic Igneous rock with lots of iron and magnesium
Created by: Skylin
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