Write an activity to know about the expansion pf liquids on heating.
Answers
Answer:
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Explanation:
(i) Take an empty bottle with a tight -fitting cork having a hole drilled in its middle, a drinking straw, two bricks, a wire gAUze and a burner.
(ii) Fill the bottle completely with water and add a few drops of ink in it to make it coloured.
(iii) Fix the cork in the mouth of the bottle and pass the drinking straw through the cork Put some molten wax around the hole so as to avoid the leakage of water.
(iv) Pour some more water into the drinking straw so that water level in the straw can be seen. Mark the water level in the straw as shown in Figure. Thermal expansion of a liquid (v) Place the bottle on the wire gauze kept over the two bricks as shown in Figure. Then heat the bottle by means of a burner.
(vi) Look at the level of water in the straw. You will notice that as the water is heated more and more, the level of water in the drinking straw rises. This shows that water expands on heating.
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Thermal expansion of a liquid
Then heat the bottle by means of a burner. (vi) Look at the level of water in the straw. You will notice that as the water is heated more and more, the level of water in the drinking straw rises. This shows that water expands on heating
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