Question

Which of the following statement(s) is/are correct regarding warm and cold air?

• A. Cold air is lighter than warm air.
• B. Cold air descends.
• C. Warm air rises up.
• D. Warm air is lighter than cold air.

Answer 1

Answer: (B), (C), (D)

Warm air is lighter than cold air.

Warm air is lighter than the cold air. When air gets heated up it expands, occupies a larger volume and becomes less dense than the air surrounding it. Hence, the warm air rises and the cold air descends.