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प्रश्न
Write briefly about the layers of the atmosphere
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उत्तर
The atmosphere is divided into five layers starting from the Earth’s surface:
- Troposphere — Its average height is 13 km. The air we breathe exists here. Almost all the weather phenomena like rainfall, fog and hailstorm occur in this layer.
- Stratosphere — It lies above the troposphere which extends up to a height of 50 km. This layer is almost free from clouds and associated weather phenomenon, making conditions most ideal for flying aeroplanes. It contains a layer of ozone gas.
- Mesosphere — It lies above the stratosphere. It extends up to the height of 80 km. Meteorites bum up in this layer on entering from the space.
- Thermosphere — In thermosphere, temperature rises very rapidly with increasing height. Ionosphere is a part of this layer. It extends between 80-400 km. This layer helps in radio transmission. In fact, radio waves transmitted from the Earth are reflected back to the Earth by this layer.
- Exosphere — This upper most layer. This layer has very thin air. Light gases like helium and hydrogen float into the space from here.
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संबंधित प्रश्न
How does the atmosphere act as a blanket?
What is atmosphere?
We often leave the lights switched on and fans running when we are not in the room. We switch on the air-conditioning even though we don’t really need it. We insist on being dropped to school in the car every day. Thus, we waste valuable energy which is generally produced by burning coal and petroleum. As you know, the burning of these fuels release gases that pollute the atmosphere.
Make a list of the similar things that we do without realizing that we are destroying the environment. Think of the ways that we can behave differently.
Choose the correct answer.
This per cent of the atmosphere is composed of nitrogen.
Choose the correct answer.
This gas protects us from the harmful ultraviolet radiation.
How is the atmosphere kept in place around the earth?
What is the difference between the troposphere and the tropopause?
What is responsible for causing a hole in the ozone layer?
Tick the correct answer
Which of the following layers of the atmosphere is free from clouds?
World Meteorological Day.
All weather changes occur in the Troposphere.
What are the different layers of the atmosphere?
What are Auroras?
Why is the troposphere the most important of all the layers of the atmosphere?
______ found above the mesosphere.
What is mesosphere?
Highly reactive gas was later names ‘oxygen’ by ______.
Analogy:
Weather changes: Troposphere.
Ozone layer: ______.
An increase in carbon dioxide content in the atmosphere would not cause
