ES. 7abc Plate Tectonics Unit Review 01

Front

What is the term for the large pieces of Earth's lithosphere that move around on the asthenosphere?

Back

Tectonic Plates

Front

Where is older oceanic crust typically found?

Back

Ocean trenches

Front

What process describes the formation of new ocean crust?

Back

Seafloor spreading

Front

How does oceanic crust compare to continental crust in terms of density?

Back

Oceanic crust is denser than continental crust.

Front

What geological feature supports the theory of seafloor spreading?

Back

Magnetic Reversal recorded in the rocks on both sides of the mid-ocean ridge.

Front

What is the layer of the Earth beneath the lithosphere called?

Back

Asthenosphere

Front

What is the process called when tectonic plates move away from each other?

Back

Divergent boundary.

Front

What type of boundary occurs when tectonic plates slide past each other?

Back

Transform boundary.

Front

What is the term for the theory that continents were once joined together and have since drifted apart?

Back

Continental drift.

Front

What geological feature is formed at a convergent boundary?

Back

Mountain ranges or ocean trenches.