ICSE BoardEnglish MediumSTD 9CHEMISTRYWater2 Marks
Question
Explain why: Rivers and lakes do not freeze easily?
✓
Answer
Large rivers do not freeze "through out" because, Water, ice, and snow are good insulators and poor conductors of heat. The portions of a lake or river that are exposed to the cold winter air will freeze into ice and this ice insulates the water below from further rapid freezing.
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