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unit 3 vocab, peyton

TermDefinition
Asthenosphere the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
Subduction when a tectonic plate slips under another
Seafloor spreading the thought that new ocean crust is formed mid ocean ridges and destroyed deep see trenches
Mantle convection when the magma in the mantle is doing a movement and the density gets higher and lower as it moves and is one of the main reasons the plates move
ridge push when magma pushes up and opens the surface
slab pull When a plates goes under another and goes to the mantle
Lava melted rock and is above the surface
magma melted rock below the surface
Tectonic plates plates under us, they move and when they do the cause volcanoes and earthquakes
theory of continental drift The theory that all plates were all together in a super continent and then moved apart to what we have now
convergent boundary When two plates hit and one goes under another
divergent boundary When two plates are moving apart from each other
transform boundary When two plates slide against each other
hot spot heat, can be a volcano
epic enter point on earths surface above focus of earthquake
focus point of fault where the earthquake originates
Pangaea all continents in one
Geo hazard spread of damage to the ecosystem
reverse fault it is compressed, a vertical movement, and happens on convergent boundary
strike slip fault It comes from sheer stress, it is horizontal movement, and is on transform boundary
normal fault it comes from tension, it is a vertical movement, happens on convergent boundary
compression When there is many things on top of an object making it small, or more compact together
tension When something is pulling against each other
sheering sliding against something
felsic
mafic
Created by: peytonstro