15 Questions
What is the name of the single supercontinent that Alfred Wegener proposed?
Pangaea
What is the main observation that supports the continental drift hypothesis?
The fitting of the continents together like a puzzle
What is the term used to describe the process of the continents moving to their current positions?
Continental Drift
What is the significance of the Appalachian Mountains in the context of continental drift?
They are similar to mountain ranges in eastern Greenland, Ireland, Great Britain, and Norway
What is the age of the identical rocks found on both sides of the Atlantic Ocean?
The same type and age
What was Wegener's conclusion about the formation of the Appalachian and Eastern Greenland mountain ranges?
They formed as a single mountain range that was separated as the continents drifted
What type of fossils were found on different continents, providing evidence for the continental drift hypothesis?
Extinct plants and animals
What was the reason why Wegener proposed that the organisms could not have traveled across the oceans?
The organisms were not adapted to marine environments
What was the significance of the grooves and rock deposits left by ancient glaciers on different continents?
They indicated that the glaciers formed near the equator
What was the reason why most geologists at the time rejected Wegener's hypothesis of continental drift?
They did not know how solid continents could plow through solid oceanic crust
What do magnetite crystals in fresh volcanic rocks always point to?
The current magnetic north pole
Why do older rocks of the same age on the same continent not point to the current magnetic north pole?
Because the North Magnetic Pole has moved over time
According to geologists, what was the reason for the difference in magnetic north poles between Europe and North America for rocks of the same age?
There were multiple north magnetic poles
How did geologists confirm their hypothesis about the continents drifting using the phenomenon of apparent polar wander?
By fitting the continents together like a puzzle
What is the name given to the phenomenon where the magnetic pole seemed to move but actually did not?
Apparent polar wander
Can you fit the pieces of the continents together like a puzzle to show how they looked 250 million years ago? Start by finding a map with the continents' true size and shape, including the continental shelf. See if you can link the eastern Americas with western Africa and Europe.
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