Question

Convection currents form when warm air rises and cold air sinks. What causes the warm air to rise and the cold air to sink? A. chemical energy B. activation energy O C. a difference in density D. the law of conservation​

Answer 1

a difference in density

Step-by-step explanation:

Density measures the amount of mass (the number of particles) in a specific volume.

Since the molecules in warm air are spread farther apart than the molecules in cold air, there are fewer air particles per unit volume in warm air than in cold air. This means that warm air is less dense than cold air, and it will rise.

So, warm air rises and cold air sinks because of a difference in density.

Answer 2

the answer is C difference in density because hot air is less dense than cold air so hot air will rise and cold air will fall.