Plate Tectonics Review

Front

Movement of Earth's lithosphere

Back

Plate Tectonics

Front

Gradual movement of continents

Back

Continental Drift

Front

Tectonic plate movement

Back

Continental drift

Front

Lithosphere = Earth's crust + upper mantle

Back

Crust

Front

Convection currents in the mantle

Back

Create a push-pull effect on tectonic plates

Front

Mantle: 2nd layer from top

Back

Divided into upper and lower mantle; lower mantle solid; creates convection currents.

Front

Asthenosphere: flows like molten plastic, solid, below lithosphere

Back

Means 'without strength'

Front

Formation of oceanic trenches

Back

Subduction zones (one plate goes underneath another)

Front

Subduction Zone

Back

One tectonic plate forced under another

Front

Seafloor spreading occurs at:

Back

Divergent plate boundaries