2.1-2.2 Plate Tectonics

Front

Thickest layer of the Earth, Middle Layer, Asthenosphere is located here (convecting magma)

Back

Mantle

Front

Outside layer of the Earth, Touches the atmosphere, Thinnest layer

Back

Crust

Front

More dense layer of the crust, Older layer of the crust, Thinner layer of the crust

Back

Oceanic Crust (lithosphere)

Front

Thicker layer of the crust, Newer or younger layer of the crust, Less dense layer of the crust

Back

Continental Crust (lithosphere)

Front

Layer of the mantle where magma convects to move the lithospheric plates

Back

Asthenosphere

Front

Rigid layer of the earth - consisting of the crust and upper mantle (tectonic plates of the Earth)

Back

Lithosphere

Front

Movement of matter that results from differences in density caused by variations in temperature. Hotter matter rises, cooler matter falls.

Back

Convection

Front

The continents joined in a single land mass.

Back

Pangea

Front

Molten rock from inside the Earth rises through the cracks in the crust, cools, and forms new oceanic crust.

Back

Sea-floor spreading

Front

Large-scale movements of Earth's lithosphere.

Back

Plate tectonics