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Plate Movement

TermDefinition
mantle the layer of the earth beneath the crust it is about 2900 km (1800) thick , and makes up about 83 percent of earth's interior . See also core and crust .
crust Earth's outta layer ; the coolest and least dense layer of earth see also core , and mantle
inner core A dense sphere of solid iron and nickel at the center of earth
outer core A layer of molten iron and nickel that surrounds the inner core of earth
latitude the distance north or south of the equator measured in degrees . See also longitude
longitude the distance east or west of the prime meridian in Greenwich , england ;measured in degrees . See also latitude
oceanic ridge A mountain-like landfrom that develops when tectonic plates move apart or separate and a new ocean lithosphare
oceanic trench long deep formation on the ocean floor that develops where two tectonic plates are moving toward each other , and one is moving under the other .
friction A force that opposes the motion of objects which are in contact
fracture the breakage of a roch into two or more pieces
continental crust crust that contains mostly land , ranging from 15 to 70 kilometers (9 to 43 miles) thick
lithosphere the cool , solid outer shell of Earth it consists of the crust and the rigid uppermost part of the mantel and is broken up to segmeants , or plates
divergent boundary a plate boundary where two plates move away from each other
convergent boundary a plate boundary where two plates move toward each other
transform boundary a plate boundary where two plates move past each other in opposite directions
subduction the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary
stress a force to act on a rock to change its shape or valume
sea-floor spreading the process by which molten material adds new oceanic crust to the ocean floor
plate boundary a place where pieces of the broken lithosphere meet boundary types include convergent , divergent , transfrom
rift valley the valley formed by a diverging plate boundary
Created by: user-2035671
 

 



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