Sea-floor spreading
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Sea floor spreading? | When molten material rises from mid-ocean ridges to create a new oceanic crust
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What happens to old oceanic crust as new molten material rises from the mantle? | Sinks into deep ocean trenches
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Subduction? | Molten material is hot, spreads then becomes cool, dense & sinks
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Sonar? | A device scientists use to map the ocean floor
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Mid-ocean ridge? | A chain of underwater mountains along which sea floor spreading occurs
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Divergent? | < > two plates carrying oceanic crust collide
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Convergent? | > < two plates carrying continental crust collide
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Transform? | ^ ¥ a plate carrying oceanic crust collides with a plate carrying continental crust
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Created by:
Sammi29
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