What is Continental Drift?
Continental Drift and Seafloor Spreading

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•
Science
•
6th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The theory that continents have moved over geological time and were once joined together as a single landmass.
2.
FLASHCARD QUESTION
Front
What is Seafloor Spreading?
Back
The process by which new oceanic crust is formed at mid-ocean ridges and older crust is pushed away.
3.
FLASHCARD QUESTION
Front
What evidence supports the theory of Continental Drift?
Back
Fossil evidence, geological similarities, and the fit of continental coastlines.
4.
FLASHCARD QUESTION
Front
What are mid-ocean ridges?
Back
Underwater mountain ranges formed by plate tectonics where seafloor spreading occurs.
5.
FLASHCARD QUESTION
Front
Who proposed the theory of Continental Drift?
Back
Alfred Wegener.
6.
FLASHCARD QUESTION
Front
What is the significance of the Mesosaurus fossil in the context of Continental Drift?
Back
It indicates that South America and Africa were once connected, as the same species was found on both continents.
7.
FLASHCARD QUESTION
Front
What technology was used to map the seafloor during WWII?
Back
Sonar.
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