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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 is no room for expansion, water (or ice) exerts a large pressure on the pipes. Hence, the pipelines carrying water burst.
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