Question

what is true about warm air?
(i) It contracts and rises.
(ii) It contracts and sinks.
(iii) It expands and rises.
(iv) It expands and sinks.​

Answer 1

Answer:

Detailed Solution. Warm air is lighter (less dense) than the cold air, hence it rises up. When the air is heated it expands and becomes less dense than the air around it. It then tends to rise up.

Explanation:

option c is correct