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Geology

Plate tectonics

QuestionAnswer
Lithosphere The thinnest layer of the earth
Plates Giant chunks of lithosphere
Asthenosphere The layer of earth under the lithosphere
Continental drift The continents moving around the world
Pangea Super continent
Oceanic ridge system Continuous submarine mountain chains
Sea floor spreading The ocean is being pushed out to the edges
Subduction A plate going under
Convergent boundaries Subduction zones
Divergent boundaries Ridges
Transform fault boundaries Plates sliding past each other
Mid ocean ridge A place where new crust is formed
Trenches A place where old crust is destroyed
Spreading center Two plates move away from each other and leave a deep crack
Rift valleys A linear shaped lowland between several highlands or mountain ranges created by the action of geological rift or fault
Deep ocean trenches Trenches in the ocean that ads very deep
Volcanic island arc Volcanoes that form an islands chain and are caused by hot spots.
Constructive forces Processes that help build up the earth
Destructive forces Processes that destroy and break down the earth
Created by: sprestidge34
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