Which of the following correctly describes seafloor spreading? A. New oceanic crust is formed in the middle of tectonic plates and then spreads outward in bands. B. New oceanic crust is formed at midocean ridges, pushed away from the ridge, and destroyed at deep-sea trenches. C. New oceanic crust is formed at seamounts and spreads outward in all directions. D. New oceanic crust is formed at deep-sea trenches, pushed away from the trench, and destroyed at midocean ridges. Mark for review (Will be highlighted on the review page)

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joeydjky joeydjky

08-11-2017
Geography

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Which of the following correctly describes seafloor spreading? A. New oceanic crust is formed in the middle of tectonic plates and then spreads outward in bands. B. New oceanic crust is formed at midocean ridges, pushed away from the ridge, and destroyed at deep-sea trenches. C. New oceanic crust is formed at seamounts and spreads outward in all directions. D. New oceanic crust is formed at deep-sea trenches, pushed away from the trench, and destroyed at midocean ridges. Mark for review (Will be highlighted on the review page)

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fatimakincsem fatimakincsem · Answer 1 · 2018-11-22T23:14:37+01:00

Answer: New oceanic crust is formed at mid ocean ridges, pushed away from the ridge, and destroyed at deep-sea trenches (Option B)

Explanation:

Sea floor spreading is a process in which new ocean floor is created through volcanic activity.

In the early 1900, Alfred Wegener, came up with a theory of continental drift.It is the idea that continents have been shifting positions on the earth’s surface over time and in 1960’s Henry Hess proved Wegener's idea right. Seafloor spreading aids in explaining the continental drift.