Front

What is the place where two plates meet?

Back

Plate Boundary

Front

What happens to the gap created by two plates moving apart?

Back

Soft, solid rock from underneath the plates rose and hardened, adding new solid rock.

Front

What causes plate movement?

Back

Convection currents in the mantle.

Front

What type of boundary is the San Andreas Fault?

Back

Transform

Front

How do we know where the plate boundaries are?

Back

They are shown by the locations where earthquakes frequently occur.

Front

What is a plate?

Back

A large, rigid slab of solid rock that makes up the Earth's lithosphere.

Front

What is a converging boundary?

Back

A boundary where two plates move toward each other, often causing one plate to be forced beneath the other.

Front

What is a diverging boundary?

Back

A boundary where two plates move apart, allowing magma to rise and create new crust.

Front

What is a transform boundary?

Back

A boundary where two plates slide past each other horizontally, causing earthquakes.

Front

What is the lithosphere?

Back

The rigid outer layer of the Earth, consisting of the crust and upper mantle.