Question

Arrange the following events in the correct order of the process involved in the movement of tectonic plates. 1) The magma sinks back into the earth in circular motion. 2) The magma pushes the plates on the surface and is cooled down due to the temperature gradient. 3) The magma continues to follow the convection type of heat transfer 4) The hot magma rises to the upper surface of the asthenosphere.

• A. 4, 2, 1, 3
• B. 4, 1, 2, 3
• C. 3, 2, 1, 4
• D. 3, 4, 1, 2

Answer 1

The correct option is A 4, 2, 1, 3

The hot magma rises up the asthenosphere surface and tends to push the tectonic plates. It sinks back into the asthenosphere in a circular motion. The magma's heat is reduced through convection. This continuous convection process results in the movement for large tectonic plates.