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In wingter, the pipelines carrying water...

In wingter, the pipelines carrying water burst in cold countries.

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(1) In cold countries , in winter, the temperature of the atmosphere falls below `0^(@)C ` . When the temperature of water falls below `4^(@)C `, it expands. Hence, the water in pipes expands.Even if ice is formed,there is an increase in the volume. (2) As there i no room for expansion, water( or ice) exerts a large pressure on the pipes. Hence, the pipelines carrying water burst.
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