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Earth's Crust

Crust Earth’s outermost layer
Mantle The layer directly beneath Earth’s crust
Core Earth’s innermost layer
Lithosphere The cool, solid portion of Earth that includes all of the crust and a part of the upper mantle
Asthenosphere A zone of partially melted rock in the upper mantle of the earth
Plate tectonics The theory scientists use to explain the movement of plates on the earth’s surface
Divergent boundary A boundary where crustal plates move away from each other
Convergent boundary A boundary where plates collide with each other
Transform fault boundary A boundary where crustal plates grind past each other
Mid-ocean ridge The place where plates of earths crust along the ocean floor are being split and molten rock pushes up to form a new ocean floor and mountain ranges
Rift A deep ocean valley formed where two crustal plates move apart
Sea-floor spreading A process in which magma is slowly pushed up through cracks in a rift and then cools to form a new seafloor
Created by: tiffanyglover
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