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polet [3.4K]
3 years ago
9

When denser materials replace lighter material, we refer to this as

Geography
1 answer:
marissa [1.9K]3 years ago
3 0

Answer:

B. Convection current

Explanation:

When denser materials replace lighter materials, it is called convection current.

This is one of the driving mechanism of the plate motion between the crust and the mantle.

  • During convection, hot mantle molten rocks rises to the surface as they become lighter.
  • Denser crustal rocks are colder and more solid packed, they sink further into the earth.
  • This forms a series of convection cells driven by the high temperature of the mantle.
  • The cyclic transition between these two plates corresponds to the convection current which carries heat way.

Therefore, the solution is convection current.

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