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Plate tectonics

Continental crust Thicker but less dense
Oceanic crust Thinner but more dense
What are the driving forces behind plate tectonics Convection currents in the mantle and plasticity in the mantle
What types of stress do convergent, divergent, and transform boundaries create Convergent-compression Divergent-tension Transform-shear
Land features of a transform boundary (1 example) Slip faults and earthquakes (San Andreas fault line)
Where are divergents boundaries most common C-C and O-O
At divergent O-O is crust created or destroyed Created
At divergent C-C is crust created or destroyed Neither
Description of divergent O-O boundary and land features formed (1 example) Sea floor spreads and magma comes up and cools, mid ocean ridges are formed (mid Atlantic ridge)
Description of divergent C-C boundary and land features formed (1 example) 2 plates move away from each other but magma doesn’t break through, rift valleys are formed (great Rift Valley)
Where are convergent boundaries found C-C, C-O, and O-O
At which types of convergent land is new crust created or destroyed O-O and C-O the oceanic is destroyed but at C-C neither happens, it reshapes
Description of convergent O-O and land features formed(1 example) 2 plates come together and one gets sub-ducted/destroyed, trenches and volcanic island arcs are formed(Mariana trench)
Description of convergent C-O and land features formed(1 example) Oceanic plate is sub-ducted, making trenches and volcanic mountains(Andes mountains)
Description of convergent C-C and land features formed(1 example) Neither plate sink, both push up creating folded mountains(Himalayan mountains)
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