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1) Appetite is increased in Winters
Atmospheric temperature is reduced in winters but body temperature remains the same.So more heat is lost by the body.So we tend to eat more to make up for the loss
2)The bottom of the cooking utencils is kept black and rough
Black and rough surface absorb more heat from the burner and cooks the food rapidly
3) Cloudy nights are hotter than clear night skys
It is known that earth becomes hot in the day time due to solar heat and becomes cool in the night by radiation
In clear night sky, heat from earth goes to the sky by the radiation
In cloudy nights,Heat radition strikes the cloud which is bad absorber ,so its reflect the radiation back which therefore remains hot
4)White clothes are comfortable in Summers and colured clothes in winters
White clothes are bad absorber of heat,they absorb very little the solar heat incident on them and reflect it most of it.So they are cool and comfortable in summers
Coloured clothes absorb most of the heat incident on them and keep the body warm,So it is comfortable in winters
5)Deserts are very hot in day and very cool in Night:
Sand is good absorber of heat,So it absorb lot of heat in the day . In night ,it losed heat by radiation and becomes cool
