Alfred Wegner
What Are They?
Sea Floor Spreading
Continental Drift
Challengers
100
What theory did Alfred come up with?
He came up with the theory of Continental Drift.
100
What layer of the Earth do the Plate Tectonics glide on?
The Plate Tectonics glide on the asthenosphere.
100
Sea Floor Spreading is...
Sea Floor Spreading is when the sea floor spreads away and loses contact with each other, so magma rises to the surface to take its place.
100
Who came up with the theory of Continental Drift?
Alfred Wegner came up with the theory of Continental Drift?
100
You get Bonus 100 pts. YEA!!!
You just earned 100 extra pts.
200
What was the super continent that Wegner discovered?
The super continent that he discovered was Pangea.
200
Plate Tectonics move each year. But how much do they move each year?
Plate Tectonics move all the time like you and me. There is just one difference, they move as slow as a snail. Slowly but constant.
200
Sea Floor Spreading occurs where?
At mid ocean ridges.
200
How much do the continents move each year?
They move relatively about 1 centimeter each year.
200
What can the continents form in a million years?
A super continent.
300
Alfred Wegner was a scientist and a...
A meteorologist.
300
What causes Plate Tectonics to move?
Plate Tectonics are forced to move by other plates pushing or pulling on them.
300

Who proposed the theory of seafloor spreading and when?

Harry Hess, 1962.

300
There was once a super continent called Pangea. Is there a possibility that there could be another one?
Yes there is high chance that another one could possibly form. But even though there is one documented one, there have been quite a few of supercontinents.
300
Which ones are evidence of Plate Tectonics? A. Continental Drift B. Sea Floor Spreading C. Faults D. Boundaries
All of them.
400
Dis he make any discoveries that wasn't the Continental Drift theory?
No
400
How do Plate Tectonics effect us?
They effect us by causing different natural disasters.
400

What type of consequence does seafloor spreading have?

Constructive consequence. Seafloor spreading creates new crust.

400
What cause the continents to move?
The cause of Continental Drift is Plate Tectonics. When they move, they cause the continents to move that are on them.
400

What evidence is proof of Seafloor spreading? A. Magnetic Reversal B. Fossil Evidence C. Fossil Fuels

A. Magnetic reversal

500

When did he discover Continental Drift?

He discovered Continental drift in 1912.

500
What do Plate Tectonics cause in our everyday lives?
Sea Floor Spreading, Continental Drift, and Earthquakes ect..
500
Why is it called Sea Floor Spreading?
It is called Sea Floor Spreading because the sea floor is spreading.
500
Why is it called Continental Drift?
It is called Continental Drift because it is continents moving not something else.
500
What are Plate Tectonics made of?
They are made of continental and oceanic crust.
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