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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.
संबंधित प्रश्न
How is our atmosphere different from the atmospheres on Venus and Mars?
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What can you do in this regard?
State whether the following is true or false.
The stratosphere extends from the top of the troposphere up to 80 km above the surface of the earth.
Write True or False.
CFCs and BFCs protect the ozone layer.
This is a picture of a supersonic aircraft.
This layer of the atmosphere is also known to protect living beings from the harmful rays of the sun. How?
When is World Environment Day Celebrated?
__________ is used to measure pressure in the air.
__________ is the great circle at the centre of the earth.
Movement of wind takes place in ______ layer.
The atmosphere is made of ______ different layers.
