Continental Drift and Relative Dating

Front

What is the name of the supercontinent that existed 335 million years ago?

Back

Pangaea

Front

What theory did Alfred Wegener propose?

Back

Theory of Continental Drift

Front

What does Alfred Wegener's theory state?

Back

There once was an original land mass that was composed of all the continents.

Front

In which country was Alfred Wegener born?

Back

Germany

Front

What was the main reason Wegener's theory was rejected?

Back

He could not explain the mechanism for continental drift.

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

Similar fossils found on different continents.

Front

What is the significance of the fit of the continents?

Back

It suggests that continents were once joined together.

Front

What is the theory of plate tectonics?

Back

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

Front

What are mid-ocean ridges?

Back

Underwater mountain ranges where new ocean floor is created.