Plate Tectonics

Front

What causes Earth's tectonic plates to move?

Back

Convection currents in the mantle.

Front

What is a location where two tectonic plates collide called?

Back

Convergent boundary.

Front

What geologic feature is most likely to be found at a convergent boundary between two pieces of continental crust?

Back

Mountain.

Front

What was the giant landmass that existed over 200 million years ago when all continents were together?

Back

Pangaea.

Front

What are the plates doing when they are forming a transform boundary?

Back

Sliding past each other.

Front

What is a divergent boundary?

Back

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

Front

What is a transform boundary?

Back

A tectonic plate boundary where two plates slide past each other.

Front

What is the theory of plate tectonics?

Back

The theory that Earth's outer shell is divided into several plates that glide over the mantle.

Front

What is subduction?

Back

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

Front

What is a rift valley?

Back

A lowland region formed by the divergence of tectonic plates.