- 1. Who was the scientist that introduced the theory of continental drift?
A) Pangaea
B) Stacy Welser
C) Alfred Wegener
- 2. True or false. Alfred Wegener used evidence from fossils, rock types, ancient climates, and seafloor spreading to prove that the continents were moving slowly.
A) False
B) True
- 3. What was the main reason that most scientists did not accept Wegener's theory of continental drift?
A) He could not explain what force would be strong enough to move whole continents.
B) He could not explain the animals.
C) He could not explain the fossils.
- 4. Where does new crust form?
A) At the top of mountains.
B) On the moon.
C) On the seafloor.
- 5. What did Alfred Wegener call the super continent with all of the land in one giant piece?
A) Asia
B) America
C) Pangaea
- 6. Suppose you have a friend that does not believe that continental drift happens. Write down two important things that scientists have learned to show that continental drift does actually happen.
- 7. True or false. The continents move slowly on Earth's surface.
A) False
B) True
- 8. True or false. Seafloor spreading occurs on the seafloor, which is located at the bottom of the ocean.
A) True
B) False
- 9. What happened to Alfred Wegener?
A) He is alive and well today
B) Died in a blizzard
C) Died in the desert
A) A method of bouncing sound waves off objects
B) A method of doing your science homework
C) When you watch TV at home, sonar transports the images to your TV
- 11. Look at the picture on pg. 222. What does the image show?
A) Pacific Ocean floor
B) Atlantic Ocean floor
C) Indian Ocean floor
- 12. What do you think the Earth will look like in 20 million years?
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