Question

Which of the following is likely to contribute to geological events that take place on earth?

A Crust undergoing convective currents
B Crust being of uniform thickness throughout
C Crust being a single layer that surrounds earth
D Crust sitting on top of molten rock of the mantle

Answer 1

The Earth's crust undergoing convective currents is most likely to contribute to geological events that take place on Earth.

Step-by-step explanation:

• Convective currents are most dominant when the molten rock rises up in the form of fluids and pull keep exerting pressure of the overlying layers of the crust.

• The movement of molten magma in the mantle stimulates the movement of tectonic plates giving birth to convective currents.

• The direction of flow of the convective current determines the "direction of the movement of plates".

Answer 2

Answer: A Crust undergoing convective currents

The formation of plate tectonics (the result of the coupling between rigid plates moving on the surface of the Earth and the convective currents undergoing in the earth’s crust) has provided a physical basis for many observations or geological events taking place on Earth.