Volcanoes

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Issue:

Science

 

Written by:

John C

 

Date added:

May 12, 2015

 

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Grade:

B

 

No of pages / words:

2 / 415

 

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3414 times

 

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Essay content:

The latter part of Wegener’s theory was rejected because the force of gravitational rotation could not be strong enough to have such a large effect. However, this new theory of plate tectonics came about from a Hess’s theory of convection cells which proved Wegener’s idea of continental drift. In 1960, Hess developed this theory through observing ocean ridges and rises, rift valleys, and sea trenches as much as 100 km deep...
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However, this new theory of plate tectonics came about from a Hess’s theory of convection cells which proved Wegener’s idea of continental drift. In 1960, Hess developed this theory through observing ocean ridges and rises, rift valleys, and sea trenches as much as 100 km deep. His theory stated that the hot molten rock in the asthenosphere rises because of its lower density but as it rises it gets cooler, and therefore more dense, so that it sinks back down...
displayed 300 characters

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