Water in lakes and ponds do not freeze at once in cold countries. Give reason. - Noon Academy

Water in lakes and ponds do not freeze at once in cold countries. Give reason.

Calorimetry | Class 10 | ICSE | Physics | Selina

Water in lakes and ponds do not freeze at once in cold countries. Give reason.

Solution:

Ice has a sufficiently high specific latent heat of fusion of 336 J g-1. Before freezing, the water in lakes and ponds must release a considerable amount of heat into the atmosphere. The ice coating that has formed on the water’s surface will help reduce heat loss from the lake’s water, which is a poor conductor of heat. As a result, in cold areas, water in lakes and ponds does not freeze.

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