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unit 3 vocab gianna

plate tectonics

Asthenosphere upper layer of earths mantel
Subduction when one plate undergoes a more dense one
Seafloor spreading when a divergent boundary occurs and new seafloor is created
Mantle convection causes the plates to move
Ridge push sliding plate force acts as a driving force
slab pull when a less dense plate undergoes more dense plate
lava hot molten liquid that comes out of volcanoes
magma hot liquid inside volcanoes and earth mantel
tectonic plate a big slab of rock
Theory of continental drift theory the continents have drifted over time
convergent 2 plates moving together
divergent 2 plates moving away from each other
transform 2 plates sliding against each other
hot spot a spot with raised tempature
epicenter center of an earthquake
focus right above
pangaea the super continent
geohazard a hazard that might cause damage to earth
reverse fault one side moves up and over the other side
strike slip fault shearing force occurs in a horizontal motion
normal fault tension occurs in a vertical direction
compression a type of stress where something is dense
tension a type of stress when somethings tight
shearing a type of stress when something breaks off
felsic lightly colored minerals
mafic dark colored minerals
Created by: giannagoss