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प्रश्न
How are clouds formed?
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उत्तर
During day time, on being heated, a large amount of water evaporates from various water bodies and goes into the air. A part of this water vapour also reaches the atmosphere through biological activities such as transpiration and respiration. This causes the air in the atmosphere to heat up. When this heated air rises, it expands and cools, which results in the condensation of water vapour forming water droplets. The presence of dust and other suspended particles in air also facilitates the process of condensation. The formation of water droplets leads to the formation of clouds.
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संबंधित प्रश्न
Match the following.
| A | B | ||
| 1. | Troposphere | (i) | Ozone |
| 2. | Stratosphere | (ii) | Ions |
| 3. | Thermosphere | (iii) | Outer Space |
| 4. | Exosphere | (iv) | Lowest Temperature |
| 5. | Mesosphere | (v) | Densest Layer of atmosphere |
Choose the correct answer.
21 per cent of the atmosphere is composed of
Choose the correct answer.
The rate at which the temperature drops in the troposphere is called
The Limit of Clouds is upto ______.
The uppermost layer of the atmosphere is ______.
This is the earth’s magnetic belt ______.
Why is the troposphere the most important of all the layers of the atmosphere?
Draw a suitable diagram for the structure of the atmosphere and label it and describe it.
Highly reactive gas was later names ‘oxygen’ by ______.
The two forms of oxygen found in the atmosphere are
