you are given a fully blown balloon and a tub hot water and a tube of Ice cold water using these items explain how you would show that air expands on heating and contain when it's cool down
Answers
Answer:
Materials Required: balloons, trough, ice cold water, hot water, bottle
Method: Take a bottle. Tie the balloon tightly on the neck of the bottle. Place the bottle in a container having hot water. Record your observation. Now place the bottle in cold water. Again observe.
Observation: When the bottle is placed in hot water, the balloon expands. When the bottle is placed in cold water, it contracts.
Inference: This happens because when the bottle is placed in hot water, the air in it becomes warm and expands due to which balloon also expands. When the bottle is placed in cold water, the air in the bottle contracts due to which balloon also contracts.
Daily life examples where you can see the air expands on heating
Hot air balloon rises up: This is because the air in the balloon expands on heating.