CKLA Unit 5 Chapter 1

Front

Who was Shen Kua?

Back

A Chinese scientist who realized Earth's surface changes slowly.

Front

What did Shen Kua observe about Earth's surface features?

Back

He observed that Earth's surface changes slowly over time.

Front

Who proposed the theory of continental drift?

Back

Alfred Wegener.

Front

What is the theory of continental drift?

Back

The theory that continents were once joined together and have since drifted apart.

Front

Why did some scientists criticize Wegener's theory of continental drift?

Back

It didn't explain how the continents moved.

Front

What did geologists discover about the continents during the 1800s and early 1900s?

Back

The continents were once joined together.

Front

What did people in Europe during the Middle Ages believe about the earth's changes?

Back

The earth's surface has always remained the same.

Front

What is the significance of Alfred Wegener's work?

Back

He introduced the idea that continents could move, which was a new concept at the time.

Front

What evidence supports the theory of continental drift?

Back

Similar rock formations and fossils found on different continents.

Front

What is a misconception about Earth's surface changes?

Back

That the earth's surface changes rapidly due to natural forces.