Hot Air or Cold: Which Is Heavier?
Hot Air or Cold: Which Is Heavier? In this experiment you will learn about air motion, how Hot air rises and you will get answer why cold air is much heavier than warm air.
Balance an “empty” baby bottle on one end of your yardstick and a tin can on the other. Put sand or rice in the can if needed. Hold a candle flame for one minute near the mouth of the bottle. Remove the flame and balance the scale again.
The bottle goes up when heat is applied to the air in it. You must remove sand or rice from the can on the other end to balance the scale.
Warm air weighs less than cold air occupying the same space.
This Experiment answered these questions.