Explain the hypothesis know as the sea floor spreading given by Hess

1.	Explain the hypothesis know as the sea floor spreading given by Hess
Answer» Sea-floor spreading\xa0— In the early 1960s, Princeton geologist Harry Hess proposed the hypothesis of sea-floor spreading, in which basaltic magma from the mantle rises to create new ocean floor at mid-ocean ridges. On each side of the ridge, sea floor moves from the ridge towards the\xa0deep-sea trenches, where it is subducted and recycled back into the mantle\xa0. A test of the hypothesis of sea-floor spreading was provided by studies of the Earth\'s magnetism.

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