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प्रश्न
Explain why in hot summer days water remains cool in earthen pots.
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उत्तर
Water seeps out through the pores in the earthen pot and it evaporates. The latent heat required for evaporation is taken, from the water inside the~pot which gets cooled.
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संबंधित प्रश्न
What produces more severe burns, boiling water or steam?
A liquid can change into vapour state at all temperatures.
What is evaporation?
If the back of your hand is moistened with alcohol, you will find that it rapidly becomes dry. Why is it that while it is drying, your hand feels cool ?
Why does our palm feel cold when we put some acetone (or perfume) on it ?
Why is the air in a region dry?
Give a geographical reason:
Air becomes saturated.
Comment on the following statements:
Evaporation produces cooling.
The rate of evaporation ______ with rising temperature.
The rate of evaporation is more when the surface area is greater.
