Plate Tectonics - Continental Drift

Front

What was the name of the supercontinent that existed 250 million years ago?

Back

Pangea

Front

What type of plate boundary occurs when two tectonic plates push together?

Back

Convergent boundary

Front

Who proposed the theory of continental drift?

Back

Alfred Wegener

Front

Where does sea-floor spreading occur?

Back

Along mid-ocean ridges

Front

What type of boundary is the San Andreas Fault?

Back

Transform boundary

Front

What is the process called when tectonic plates move apart?

Back

Divergent boundary

Front

What is the name of the theory that explains the movement of Earth's plates?

Back

Plate tectonics

Front

What geological feature is formed at a convergent boundary?

Back

Mountains or deep ocean trenches

Front

What is the main driving force behind plate tectonics?

Back

Convection currents in the mantle

Front

What happens at a transform boundary?

Back

Plates slide past each other, causing earthquakes