ch 4 plate tectonics

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•
Science
•
6th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is Plate Tectonics?
Back
The theory that Earth's surface is broken into large, rigid pieces (plates) that move with respect to each other.
2.
FLASHCARD QUESTION
Front
What causes convection currents in the Earth's mantle?
Back
The heat from the Earth's core causes the mantle's material to heat up, become less dense, and rise, creating convection currents.
3.
FLASHCARD QUESTION
Front
Who proposed the theory of continental drift?
Back
Alfred Wegener.
4.
FLASHCARD QUESTION
Front
What is Pangaea?
Back
A supercontinent that existed millions of years ago, where all continents were joined together.
5.
FLASHCARD QUESTION
Front
What are the three types of plate boundaries?
Back
Convergent, Divergent, and Transform boundaries.
6.
FLASHCARD QUESTION
Front
What happens at a convergent boundary?
Back
Two tectonic plates collide, which can cause mountains to form or one plate to be subducted beneath another.
7.
FLASHCARD QUESTION
Front
What is the outer core primarily composed of?
Back
Iron and nickel.
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