Unit 3

Front

What is a Dike?

Back

A sheet of rock that cuts across another sheet of rock.

Front

What happens to old crust during seafloor spreading?

Back

It goes back into the mantle through subduction.

Front

What is a tsunami?

Back

A large ocean wave caused by underwater earthquakes.

Front

What is a divergent boundary?

Back

A tectonic boundary where two plates move away from each other.

Front

What is an epicenter?

Back

The point on the surface where an earthquake began.

Front

What is subduction?

Back

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

Front

What is a convergent boundary?

Back

A tectonic boundary where two plates collide.

Front

What is a transform boundary?

Back

A tectonic boundary where two plates slide past each other.

Front

What causes earthquakes?

Back

The sudden release of energy in the Earth's crust that creates seismic waves.

Front

What is the mantle?

Back

The layer of the Earth between the crust and the core.