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Earth's Structure

TermDefinition
Mantle The layer beneath the crust and above the core
Pangea The theory that all continents were once part of one large landmass.
Inner Core The exact middle of the Earth's center that is made of extremely hot, solid metal
Outer Core Part of the Earth's center that is made from molten (liquid) iron and nickel
Crust The layer of the Earth that lies above the mantle and is the Earth's hard outer shell. It has two categories: oceanic and continental.
Fault A crack in the Earth's surface that was caused by movement
Continental Drift The gradual movement of continents over time over the Earth's surface
Lithosphere An area that includes the Earth's crust and upper mantle
Asthenosphere The middle and lower mantle that includes magma
Convection Currents The current by liquids or gases when there's a difference in temperature
Sea-floor Spreading The process where tectonic plates move apart, magma is forced up, cools, then forms new crust at the bottom of the ocean.
Subduction The process where one plate slides down and beneath another plate
Divergent boundary When plates move away from each other
Convergent When plates move towards/on top of each other
Transform When plates slide past one another
Oceanic ridge Where sea-floor spreading occurs
Created by: ehenke
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