Question

explain how conditions in the mantle create a convection current.

Explanation:

The mantle has hot, less - dense material near the core that rises, cools as it moves towards the surface, becomes denser and sinks back down, creating a cycle which is the convection current. This is due to heat transfer from the Earth's core and radioactive decay in the mantle.

Answer:

Hot, less - dense material near the core rises, cools near the surface, becomes denser and sinks, creating a cycle known as a convection current due to heat from the core and radioactive decay.