Plate Tectonics Modified

Front

What is a transform boundary?

Back

A place where two tectonic plates slip past each other, moving in opposite directions.

Front

What is Pangaea?

Back

The name of the supercontinent that existed millions of years ago.

Front

What causes the movement of Earth’s plates?

Back

Convection currents in the mantle.

Front

What does Wegener’s hypothesis of continental drift state?

Back

The continents were once joined together in a single landmass.

Front

What is produced by a collision between two pieces of continental crust at a converging boundary?

Back

A mountain range.

Front

What is a divergent boundary?

Back

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

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 of the mantle beneath the lithosphere that allows tectonic plates to move.

Front

What is subduction?

Back

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

Front

What is a mid-ocean ridge?

Back

An underwater mountain range formed by divergent tectonic plates.