Front

What is the name of the supercontinent that existed millions of years ago?

Back

Pangaea

Front

What does the theory of continental drift propose?

Back

The continents were once joined in a super-continent and have moved over time.

Front

Who developed the theory of continental drift?

Back

Alfred Wegener

Front

What is continental drift?

Back

The movement of the Earth's continents relative to each other.

Front

What evidence supports the theory of continental drift?

Back

Fossil distribution, geological similarities, and the fit of continental coastlines.

Front

What is the lithosphere?

Back

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

Front

What are tectonic plates?

Back

Large pieces of the lithosphere that move and interact at their boundaries.

Front

What is the significance of Alfred Wegener's work?

Back

He introduced the idea that continents were once connected and have drifted apart.

Front

What is a supercontinent?

Back

A landmass that contains all or most of the Earth's continents.

Front

What is the role of convection currents in plate tectonics?

Back

They drive the movement of tectonic plates in the Earth's mantle.