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ICSE Class 8 Physics Question 7 of 19

Heat Transfer — Question 8

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Question 8

Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts.

Answer

The following experiment demonstrates that same volume of different liquids heated to same rise in temperature expand by different amounts:

Describe an experiment to show that same volume of different liquids heated to same rise in temperature expand by different amounts. Heat Transfer, Concise Physics Solutions ICSE Class 8.
  1. Take four identical glass bottles each fitted with a narrow glass tube through a cork at its mouth.
  2. Fill them up to the same level with different liquids like water, alcohol, kerosene, benzene.
  3. Place them in a common water bath containing boiling water as shown in figure.

Observations — After sometime it is noticed that different liquids rise to different levels. Benzene expands the most followed by alcohol and kerosene. Water expands the least.

Conclusion — From the above experiment it is concluded that, same volume of different liquids heated to same rise in temperature expand by different amounts.