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Plate Movement

QuestionAnswer
crust the layer of rock that forms earth's outer surface
mantle the layer of hot,solid material between earth's crust and core
outer core a layer of molten iron and nickel that surrounds the inner core of earth
inner core a dense sphere of solid iron and nickel at the center of earth
latitude the distance north or south of the equator measured in degrees
longitude the distance east or west of the prime meridian in Greenwich,England;measured in degrees
oceanic ridge A mountain-like land form that develops when tectonic plates move apart or separate and a new ocean lithosphere forms
sea-floor spreading The process by which molten material adds new oceanic crust to the ocean floor
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.
ocean trench an undersea valley that represents one of the deepest parts of the ocean
tectonic plates a piece of earth's crust that,according to plate tectonics,is pushed by movement in the asthenosphere
lithosphere the cool,solid outer shell of earth
fracture the breakage of a rock into two or more pieces
elasticity the ability of rock to be stretched and then return to its original position once the stress has been removed
stress the amount of force being applied to a rock or surface
strain change in volume,size,or shape that results from stress
plate boundary a place where pieces of the broken lithosphere meet
continental crust crust that contains mostly land,ranging from 15 to 70 kilometers thick
oceanic crust crust that lies beneath the ocean,ranging from 5 to 10 km thick.
friction a force that opposes the motion of objects,which are in contact
rift valley the valley formed by a diverging plate boundary
Created by: user-2015961
 

 



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