Question

Warm air is heavier than cold air. State whether the above statement is true or false and explain.

• A. True, because warm air contains more heat
• B. True, because warm air molecules are separated by greater distances
• C. False, because molecules of warm air expand and become less dense
• D. False, because cold air contain extra temperature than hot air

Answer 1

The correct option is C False, because molecules of warm air expand and become less dense

Warm air is lighter than cold air because its particles have more heat energy, which results in the increase in distances between the molecules. This decreases the density, and hence makes it lighter than cold air.