Heat transfer due to convection in the asthenosphere is responsible for the motion of tectonic plates. The plates form in the mo

Question

1 month ago

5

Heat transfer due to convection in the asthenosphere is responsible for the motion of tectonic plates. The plates form in the mo

st brittle layer.
Choose the most accurate statement below:

Select one:

a. Heat and convection currents move plates in the lithosphere

b. Heat and convection currents move plates in the asthenosphere

c. Heat and convection currents move plates in the mantle

d. Heat and convection currents move plates in the outer core

Geography

1 answer:

NikAS [361] · Answer 1 · 2026-04-01T14:53:09+03:00

Answer:

Option (A)

Explanation:

The lithosphere represents the rigid outer shell of the Earth, exhibiting brittleness that leads to the fracture of rocks upon deformation. It comprises numerous tectonic plates categorized into two types: the oceanic and continental crusts.

These plates float atop the less dense asthenosphere due to convection currents generated within the mantle. The heat from the Earth's interior causes this current. The movement of plates across the asthenosphere is known as the theory of plate tectonics. Therefore, the correct selection is option (A).