Plate Tectonics and Boundaries

Front

Plate Tectonics

Back

explaining the movement of Earth's lithospheric plates.

Front

Lithosphere

Back

outer layer of Earth, consisting of the crust and upper mantle.

Front

Asthenosphere

Back

layer beneath the lithosphere, allowing plate movement.

Front

Continental Drift

Back

that continents move across Earth's surface over time.

Front

Alfred Wegener

Back

the theory of continental drift in 1912.

Front

Sea Floor Spreading

Back

where new oceanic crust forms at mid-ocean ridges and spreads outward.

Front

Mid-Ocean Ridge

Back

mountain range formed by plate tectonics.

Front

Divergent Boundary

Back

move apart, creating new crust.

Front

Convergent Boundary

Back

move towards each other, often causing subduction.

Front

Transform Boundary

Back

slide past each other horizontally.