Question

Why do the farmers fill their fields with water on a cold winter night?

Answer 1

Hint: To answer this question, we must have a concept of specific heat capacity, specific heat, the quantity of heat required to raise the temperature of one gram of a substance by one degree Celsius. Water has a large heat capacity. It is a feature of water molecules due to hydrogen bonding.

Complete answer:
In the absence of water, if the air temperature drops below 0 degrees Celsius on a cold winter night, the water in the fine capillaries of the plant freezes, causing the veins to rupture due to the increase in the volume of water on freezing. Plants will die as a result, and the crop will be destroyed. Farmers fill their fields with water to save their crops on such cold nights since water has a high specific heat capacity and does not allow the temperature in the surrounding area of plants to dip below 0 degrees Celsius.
So, we can say that due to the high specific heat capacity of water, it does not lose any heat easily and saves the field from frost in cold freezing winters.

Note:
Note that Specific heat capacity is dependent on the initial temperature and pressure and is often overlooked in practical applications. A substance's specific heat is an important property. The term "intrinsic characteristic" refers to a property that is independent of the size or shape of the amount in question. Any extrinsic attribute with the phrase specific in front of it is now an intrinsic property.