Plate Boundaries

Front

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

Back

Transform boundary.

Front

What type of plate boundary is characterized by plates moving apart?

Back

Divergent boundary.

Front

Continental plates are ______ dense and ________ than ocean plates.

Back

less; thicker.

Front

What causes the movement of tectonic plates?

Back

Convection currents in the Asthenosphere.

Front

Where does sea floor spreading most likely occur?

Back

At divergent plate boundaries (oceanic vs. oceanic).

Front

What is a convergent boundary?

Back

A boundary where two tectonic plates collide or move towards each other.

Front

What happens at a divergent boundary?

Back

Tectonic plates move away from each other, creating new crust.

Front

What is subduction?

Back

The process where one tectonic plate moves under another and is forced into the mantle.

Front

What is the Asthenosphere?

Back

A semi-fluid layer of the Earth's mantle that allows tectonic plates to move.

Front

What is the Moho discontinuity?

Back

The boundary between the Earth's crust and the underlying mantle.