ICSE-VIII-Physics
06: Heat Energy Class 8 Physics
- #28Describe an experiment to show that liquids expand on heating.Ans : Experiment:
- Take round bottomed flask filled with water.
- Close its mouth with air-tight cork having delivery tube through it.
- Mark the level of water. Let it be at A.
- Now heat the flask. As water gets heated in flask, the level of water in the tube rises from A to B.
- This proves that liquids expand on heating.
ORExperiment:- Take a laboratory Celsius thermometer Suspend it with the help of a stand.
- Note the level of mercury thread in it. Let it be at A.
- Now take hot water in a beaker and as shown, set up the arrangement.
- The mercury thread rises to B by gaining temperature.
- This shows that liquids expand on heating.
- Take round bottomed flask filled with water.