Plate Tectonics

Front

What drives Earth's plate movement?

Back

Convection currents.

Front

What forms where plates diverge on land?

Back

A rift valley.

Front

What type of boundaries do plates slide past each other?

Back

Transform boundaries.

Front

What is the San Andreas fault an example of?

Back

A transform boundary.

Front

What are breaks in the crust called where plates meet?

Back

Faults.

Front

What is the outer layer of the Earth called?

Back

The lithosphere.

Front

What is the layer of the Earth beneath the lithosphere?

Back

The asthenosphere.

Front

What type of boundary occurs when plates collide?

Back

Convergent boundary.

Front

What geological feature is formed at convergent boundaries?

Back

Mountains or trenches.

Front

What is a mid-ocean ridge?

Back

An underwater mountain range formed by diverging plates.