Unit 2: Tectonic Plate Motion

Front

Feature created at a convergent boundary where one plate sinks below another.

Back

Trench

Front

Specific layer of the earth where convection currents take place

Back

Asthenosphere

Front

Theory that says continents have been slowly moving over time

Back

Continental drift

Front

Large landmass found about 200 million years ago.

Back

Pangaea

Front

Scientist who suggested that at one time all continents were once joined in 1 large landmass called Pangaea

Back

Alfred Wegener

Front

Type of plate boundary where plates are moving away from each other.

Back

Divergent

Front

An area in the middle of a tectonic plate where magma rises, reaches the surface and can thus create an island chain.

Back

hot spot

Front

Plate boundary where plates are moving toward each other.

Back

Convergent

Front

The part of the earth's layers that is formed from the combination of the crust and the upper part of the mantle

Back

Lithosphere

Front

Type of plate boundary where plates are sliding past each other.

Back

Transform