1. Topic: Continental Drift
Essential Question: What evidence supports the theory of continental drift?

2. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Alfred Wegener In the early 1900’s Alfred Wegener proposed the theory of continental drift Continental Drift All of the continents were once connected together to form the super continent, Pangaea

4. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Continental Drift All of the continents have drifted to where they are now Earth’s lithosphere (crust) is divided into tectonic plates

5. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Evidence Africa and South America’s coastlines fit together like a puzzle

6. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Evidence Fossils and types of rocks on the eastern coast of S. America matched those on the west coast of Africa

7. A closer look…

8. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Evidence Scientists were able to use new technology to find ocean features such as trenches, seamount chains (mountains on the sea floor), and mid-ocean ridges

10. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Harry Hess proposed that at mid-ocean ridges, magma flows up from the mantle and forms new crust on both sides of the ridge This new crust makes the ocean floor wider and pushes the continents surrounding it further away from each other

11. What to highlight
You should not highlight everything, to start, you will highlight/underline what is in red
What we are highlighting will help us answer the essential question:
What evidence supports the theory of continental drift?

12. Creating questions Look at what you’ve highlighted
What you have highlighted should be the answer to your question
We will do this together

13. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Alfred Wegener In the early 1900’s Alfred Wegener proposed the theory of continental drift Continental Drift All of the continents were once connected together to form the super continent, Pangaea
What is the theory of continental drift?

14. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Continental Drift All of the continents have drifted to where they are now Earth’s lithosphere (crust) is divided into tectonic plates
What is the lithosphere?

15. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Evidence Africa and South America’s coastlines fit together like a puzzle

16. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Evidence Fossils and types of rocks on the eastern coast of S. America matched those on the west coast of Africa

17. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Evidence Scientists were able to use new technology to find ocean features such as trenches, seamount chains (mountains on the sea floor), and mid-ocean ridges

18. Topic: Continental Drift Essential Question: What evidence supports the theory of continental drift?
Harry Hess proposed that at mid-ocean ridges, magma flows up from the mantle and forms new crust on both sides of the ridge This new crust makes the ocean floor wider and pushes the continents surrounding it further away from each other
What are 3 pieces of evidence that support the theory of continental drift?

19. Now let’s write a summary
Look at each question you wrote on your own, and answer each question in a complete sentence.
-What is the theory of continental drift?
-What is the lithosphere?
-What are 3 pieces of evidence that support the theory of continental drift?