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Continental Drift

Gr.7 science

TermDefinition
Asthenosphere The layer of Earth below the Lithosphere. The asthenosphere contains hot, partially melted with plasticlike properties
Lithosphere The solid, rocky layer of Earth including the crust and top part of the mantle.
Volcano An opening in Earth's crust through which hot gases, rock fragments, and molten rock erupt.
Dome Mountain A mountain formed then magma lifts Earth's surface, creating a broad dome, or bulge.
Fault-block Mountain A mountain formed when masses of rock move up or down along a fault.
Folded Mountain A mountain formed when two tectonic plates collide.
Divergent Boundaries A place where the plates that make up Earth's crust and upper mantle move away from one another.
Convergent Boundaries A place where the plates that make up the Earth's crust and upper mantle move together.
Transform-fault Boundaries A place where the plates that make up Earth's crust and upper mantle move past one another.
Convection The process by which heat energy is transferred through liquids or gases by the movement of particles.
Convection Currents The path along which energy is transferred during convection. Scientists think that convections currents in the mantle causes Earth's tectonic plates to move.
Theory of Plate Tectonics The theory that Earth's lithosphere is broken into enormous slabs, or plates, that are in motion.
Plate Boundaries A place where the plate that make up Earth's crust and upper mantle either move past one another.
Crust The thin outer layer of Earth
Mantle The middle layer if Earth.
Pangaea A supercontinent that existed about 200 million years ago
Theory of Continental Drift A theory that states the continents formed a single land mass at one time in the past and have drifted over time to their present positions, suggested by Alfred Wegener
Created by: BOB77