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Continents Continental Drift theory Sea-floor spreading
100
Pangaea
What continent formed first 175 million years ago?
100
What continent is moving today?
Australia
200
What is sea-floor spreading?
Is the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies
200
What continent no longer exist? (hint: not Pangaea)
Eurasia or Ganwanda
200
how did they different fossils on different continents?
The animals traveled on Pangaea
200
What is two kinds of crust?
Continental Crust, Oceanic Crust
300
Name the biggest continent?
Asia
300
What is the name of the scientists who made the continental drift theory?
Alfred Wegener
300
Describe what happens as magma rises through the crust of mid-ocean ridges.
Hardens and forms broad underwater valleys
400
what was the ocean around the first continent called
Panthalassa
400
Why did no one believe Wegener's theory?
Because he lacked evidence
400
Which kind of crust is made of heavy, dense material?
Oceanic Crust
500
What was Pangaea's nickname?
The super-continent
600
What is the continental Drift theory? (600 points)
is the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations.
700
How do you think seafloor spreading helps helps explain the theory of continental drift?
Seafloor spreading is caused by two plates moving apart. This is caused by plate tectonics. Continental drift is also caused by plate tectonics. Therefore, we can conclude that continental drift is related to seafloor spreading. When the plates move, it carries the continents with it, and thus the continents drift away from each other.






Restless Continents

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