Who came up with the hypothesis of continental drift
What is Alfred Wegener?
100
What technology was used to map the ocean floor?
What is sonar?
100
In which areas does subduction of the ocean floor take place?
What is deep ocean trenches
100
List the 3 types of plate boundaries.
What is transform, divergent, and convergent.
100
Wegener thought that all the continents were once joined together in a supercontinent that he called
What is Pangaea?
200
What is continental drift?
What is the movement of the continents?
200
Convection currents help push magma from the mantle through the mid ocean ridge.
What is false?
200
Explain what is subduction?
200
What type of boundary occurs when two plates rub against each other?
What is transform?
200
Wegener proposed that mountains form when continents collide, crumpling up their edges. Was Wegener's idea about how mountains form consistent with his hypothesis of continental drift?
300
Why was Alfred Wegner's hypothesis rejected?
What is not understanding how continents drifted apart?
300
Explain what mid ocean ridges are.
What is underwater chains of mountains?
300
Why are the oldest parts of the ocean floor no older than about 200 million years old?
300
What type of boundary occurs at the mid ocean ridge?
What is divergent boundary
300
How is pillow lava evidence of sea-floor spreading?
400
Explain at least 2 evidences that Alfred Wegener used to support his hypothesis on continental drift.
What is fossils, climate, coals, mountain ranges?
400
Explain what is seafloor spreading.
400
What type of boundary occurs when an oceanic plate subducts under a continental crust?
What is convergent?
400
Explain how Alfred Wegener's hypothesis of continental drift was supported? Use evidences and information that you learned to back up this explanation.
500
Michelle is a scientist working in Antarctica. She learns that fossils of Glossopteris have been found on Antarctia. Her colleague Joe, working in India, has also found Glossopteris fossils. Write a letter from Michelle to her colleague explaining how these fossils could be found in both places.
Discuss how it explains the fossil findings.
500
Explain how sea floor spreading and subduction works.
(please use the following words: new crust, less dense, more dense, old crust, oceanic crust, continental crust, subduction)
500
How does the density of oceanic crust differ from that of continental crust? Why is this difference important?
500
Define plate tectonics.
500
What type of landforms form:
A) Divergent
B) Convergent
C) Transform