Question

select the correct answer. the diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates? a. 1 b. 2 c. 3 d. 4

Explanation:

To determine the region where convection currents influence tectonic plate movement, we analyze Earth's layers:

1. Layer 1 (Inner Core): Solid, no convection.
2. Layer 2 (Outer Core): Liquid, but convection here drives Earth's magnetic field, not plate movement.
3. Layer 3 (Mantle): Semi - fluid asthenosphere (part of mantle) has convection currents. These currents drag tectonic plates (on lithosphere, above asthenosphere) causing their movement.
4. Layer 4 (Crust): Solid, no convection driving plates.

So the region with convection currents influencing tectonic plates is the mantle (layer 3, option C).

Answer:

C. 3