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Plate Tectonics

Plate Tectonics Vocabulary

TermDefinition
Continental Crust Crust not as dense as oceanic crust.
Oceanic Crust Crust in the Ocean.
Mantle Layer of rock between the earth's crust and core.
Inner Core Solid dense center of the earth. (Hottest Layer)
Outer Core Liquid core that is formed around the Inner Core.
Lithosphere The solid outer layer of the earth that consists of the ridged part of the mantle.
Lithospheric Plates Block of Lithosphere that consists of the crust and outer most layer of mantle that moves.
Asthenosphere A zone in the upper mantle of the earth, consisting of hot, plastic rock, that lies underneath the solid lithosphere.
Plate Boundaries When tectonic plates touch.
Continental Drift When Earth was one piece and pieces of the crust were torn apart to make continents today. :)
Convection Currents Causes oceanic lithosphere to move sideways from each other.
Plate Tectonics Plate Tectonics is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, since tectonic processes began on Earth between 3 and 3.5 billion years ago.
Convergent Boundary The boundary formed by the collision of 2 plates.
Divergent Boundary Boundary when 2 plates move away from each other.
Transform Boundary When 2 plates are grinding against each other.
Created by: 200426564