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प्रश्न
Why is the air in a region dry?
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उत्तर १
The air in a region is dry primarily due to low moisture content. Moreover, distance from the sea, the high speed of the wind and increased rate of evaporation contribute to a decrease in the moisture holding capacity of the atmosphere.
For example, in Rajasthan, the air is dry and hot leading to the low moisture content in the air.
उत्तर २
We experience the dampness or dryness in the air throughout the year. The changes occurring in the weather conditions in desert areas, coastal areas and mountainous areas.
- Rajasthan lies in a region with dry and hot air. There is hardly any moisture in the air. People wear loose cotton clothes.
- Kashmir valley lies in a region with cold and dry air. Moisture is minimal in the air. People cover themselves with warm clothes.
- In Mumbai, the air is hot and humid. There, the proportion of moisture is very high in the air. In addition, if dark clouds cover the sky, the content of moisture in the air increases.
संबंधित प्रश्न
Why does a desert cooler cool better on a hot dry day?
What type of clothes should we wear in summer?
What produces more severe burns, boiling water or steam?
State three factors which affect the rate of evaporation of a liquid.
Explain with an example to demonstrates that when a liquid evaporates, it takes heat from its surroundings.
Why is heat energy needed to melt a solid ? What is this heat energy called ?
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 ?
The evaporation of water increases under the following conditions :
Comment on the following statements:
Evaporation produces cooling.
Comment on the following statements:
Rate of evaporation of an aqueous solution decreases with increase in humidity.
