niaofficial17 niaofficial17
  • 25-02-2019
  • Biology
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At which point does the motion of convention currents occur to drive plate movement

At which point does the motion of convention currents occur to drive plate movement class=

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denis9rafael
denis9rafael denis9rafael
  • 06-03-2019

Answer: 2

The convection currents shown in points 1 and 3 transfer heat from the outer core (number 4) to the lithosphere. Here, the lower density hot magma breaks apart the plates at point 2 creating a divergent plate boundary. This new magma mass will drive a lateral movement of the plates. The edges of the plates which have a higher density basalt rock will sink into the mantle and get consumed in trenches/subduction zones

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