How are convection currents produced in the air?

Question

A
Cold air is less dense, so it rises. As the cold air rises, warm air descends.
B
Warm air is less dense, so it rises. Cold air moves in to take its place.
C
Wind causes convection currents by stirring up the air.
D
Big weather events like hurricanes and tornadoes cause convection currents.

Answer 1

The correct answer is B: Warm air is less dense, so it rises. Cold air moves in to take its place.

In convection currents, warm air, being less dense, rises and allows cooler, denser air to move in to fill the space left by the rising warm air. This process creates a cycle of movement that is characteristic of convection.