Continental Drift/Seafloor Spreading
Flashcard
•
Science
•
7th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Undersea mountain chain where new ocean floor is produced at a divergent plate boundary is a ____________
Back
Mid-ocean ridge
2.
FLASHCARD QUESTION
Front
Deep underwater canyons where ocean floor sinks back into mantle are called ____________
Back
Deep ocean trench
3.
FLASHCARD QUESTION
Front
During sea-floor spreading, crust is ____________
Back
Created
4.
FLASHCARD QUESTION
Front
Process by which molten material adds new oceanic crust to the ocean floor is ____________
Back
Sea-floor spreading
5.
FLASHCARD QUESTION
Front
Who was the scientist who hypothesized continental drift?
Back
Wegener
6.
FLASHCARD QUESTION
Front
The theory that continents have moved over geological time is known as ____________
Back
Continental drift
7.
FLASHCARD QUESTION
Front
The movement of tectonic plates is driven by ____________
Back
Convection currents in the mantle
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