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He used a navy ship to sound the sea floor. He found out magma was coming out of the mantle and into the sea floor.
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Earn +20 ptsQ: How did harry hess find out that the sea floor was spreading?
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Related questions
What was Harry Hess's discovory?
sea floor spreading
Who suggested sea floor spreading?
Harry Hess
Who discovered Seafloor Spreading?
Henry H. hess
Who proposed sea floor spreading?
Harry Hess YAY;-)
Who came up with sea floor spreading?
Harry Hess =)
Who proposed the theory of seafloor spreading based on maps of the ocean floor?
The Seafloor Spreading Theory was proposed by Harry Hess.
What was harry Hess important scientific contribution?
sea floor spreading
Who Used sonar to prove sea floor spreading?
Harry Hess
What scientist helped to discover the process of sea floor spreading?
Harry Hess
Why was the ocean floor surveying conducted by Harry Hess of major geological importance?
Harry Hess helped develop the idea of seafloor spreading.
When did harry hess propose seafloor spreading?
1960 (although Hess' paper built upon Alfred Wegener's theory of continental drift , proposed in 1915).
Which was not included in the support for harry hess's hypothesis sea floor spreading?
Granitic strips in the ocean floor ... Novanet
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