CKLA Unit 5 Chapter 1

Front

What is the belief about the earth's surface during the Middle Ages?

Back

People believed that the earth's surface has always remained the same.

Front

Who proposed the theory of continental drift?

Back

Alfred Wegener proposed the theory of continental drift.

Front

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

Back

Geologists discovered that the continents were once joined together.

Front

What criticism did scientists have about Wegener's theory?

Back

Some scientists criticized Wegener's theory because it didn't explain how the continents moved.

Front

What happened to Antarctica's climate according to Wegener's theory?

Back

Antarctica became colder and covered in ice.

Front

What is continental drift?

Back

Continental drift is the theory that continents move slowly over time.

Front

What evidence supports the theory of continental drift?

Back

Evidence includes similar rock formations and fossils found on different continents.

Front

What is the significance of Alfred Wegener's work?

Back

Wegener's work laid the foundation for understanding plate tectonics.

Front

What are tectonic plates?

Back

Tectonic plates are large sections of the Earth's crust that move and interact.

Front

How do tectonic plates affect the Earth's surface?

Back

Tectonic plates can cause earthquakes, volcanic eruptions, and the formation of mountains.