Question

Warm air moves upward, while cold air moves downward. Which of the following best explains this pattern of heat transfer?

A
Differences in density caused by temperature differences create buoyant forces.

B
Gravity pulls cold air downward more strongly than warm air.

C
High-energy particles bounce upward off the ground in large numbers, causing convection.

D
Gravity acts on particles but not on energy, so thermal radiation rises.

Answer 1

A) Density

Step-by-step explanation:

cold air is more compact than warm air since particles aren't as active, therefore it is more dense and heavier than warm air.

It's been awhile so my dearest apologies if this is wrong.