| Continents | Continental Drift theory | Sea-floor spreading |
|---|---|---|
|
Pangaea
What continent formed first 175 million years ago?
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What continent is moving today?
Australia
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What is sea-floor spreading?
Is the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies
|
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What continent no longer exist? (hint: not Pangaea)
Eurasia or Ganwanda
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how did they different fossils on different continents?
The animals traveled on Pangaea
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What is two kinds of crust?
Continental Crust, Oceanic Crust
|
|
Name the biggest continent?
Asia
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What is the name of the scientists who made the continental drift theory?
Alfred Wegener
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Describe what happens as magma rises through the crust of mid-ocean ridges.
Hardens and forms broad underwater valleys
|
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what was the ocean around the first continent called
Panthalassa
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Why did no one believe Wegener's theory?
Because he lacked evidence
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Which kind of crust is made of heavy, dense material?
Oceanic Crust
|
|
What was Pangaea's nickname?
The super-continent
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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.
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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.
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