Plate Tectonics and Seafloor Spreading

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Science
•
6th - 8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the name of the supercontinent that existed millions of years ago?
Back
Pangaea
2.
FLASHCARD QUESTION
Front
What causes Earth's tectonic plates to move?
Back
Convection currents in the mantle
3.
FLASHCARD QUESTION
Front
What type of plate boundary occurs when two plates come together?
Back
Convergent Boundary
4.
FLASHCARD QUESTION
Front
Why did most geologists reject Alfred Wegener's idea of continental drift?
Back
Wegener could not identify the force that moved the continents.
5.
FLASHCARD QUESTION
Front
What is the process called that forms new oceanic crust at mid-ocean ridges?
Back
Seafloor Spreading
6.
FLASHCARD QUESTION
Front
What is a divergent boundary?
Back
A plate boundary where two tectonic plates move away from each other.
7.
FLASHCARD QUESTION
Front
What is a transform boundary?
Back
A plate boundary where two tectonic plates slide past each other.
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