Plate Tectonics

Front

What causes tectonic plates to move?

Back

Convection currents in the Earth's mantle.

Front

What are the two types of crust?

Back

Continental and oceanic.

Front

What theory explains that Earth's outer layer is broken into large slowly moving pieces?

Back

Plate Tectonic Theory.

Front

What is Pangaea?

Back

The name of the super-continent that existed millions of years ago.

Front

What is a transform boundary?

Back

A type of tectonic plate boundary where plates slide past each other.

Front

What is a convergent boundary?

Back

A boundary where two tectonic plates collide.

Front

What is a divergent boundary?

Back

A boundary where two tectonic plates move apart.

Front

What is subduction?

Back

The process where one tectonic plate moves under another plate.

Front

What is the lithosphere?

Back

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

Front

What is the asthenosphere?

Back

The semi-fluid layer beneath the lithosphere that allows tectonic plates to move.