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EL & Plate Tec

Eath layers and plate tectonics

TermDefinition
crust the thin and solid outermost layer of the Earth above the mantle
mantle the layer of rock between the Earth's crust and core
core the central part of the Earth below the mantle
lithosphere the solid, outer layer of the Earth that consists of the crust and the rigid upper part of the mantle
asthenosphere the soft layer of the mantle on which the tectonic plates move
mesosphere the strong, lower part of the mantle between the asthenosphere and the outer core
tectonic plate a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle
continental drift the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
Pangaea the single, huge continent that scientists believed existed 245 million years ago
sea-floor spreading the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies
Convection movement of matter that results from differences in density caused by temperature varying, causes plates to move
inner core solid, dense center of our planet that extends from the bottom of the outer core
outer core liquid layer of Earth's core, beneath mantle and surrounds inner core
plate tectonics large-scale movement of Earth's lithosphere, which is made up of the crust and the rigid upper part of the mantle
convergent boundary 2 plates collide - 3 types of collisions can happen at this boundary
divergent boundary 2 plates move away from each other
transform boundary 2 plates move apart/away from each other
Created by: beardbrdgtbrd
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