Advertisements
Advertisements
प्रश्न
Write briefly about the layers of the atmosphere
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
What is atmosphere?
Explain the importance of carbon dioxide for (a) photosynthesis (b) warming the earth’s environment. State what would happen if excess carbon dioxide as a pollutant is released into the atmosphere.
We need to understand that global warming, climate change, acid rain, and ozone depletion are all happening because of our dependence on fossil fuels and CFC-based technologies. Therefore, the need of the hour is to reduce our dependence on them.
What can you do in this regard?
State whether the following is true or false.
The earth’s atmosphere contains 99 per cent oxygen, which is essential for life.
What is the difference between the troposphere and the tropopause?
State any three characteristics of the stratosphere
Explain the significance of the earth’s atmosphere.
In your notebooks, draw a diagram showing the layers of the atmosphere. Mark clearly the ozone layer, the height at which a jet plane can fly and also the height up to which birds can fly.
State whether the following sentence is true (T) or false (F).
The atmosphere is composed mainly of nitrogen and oxygen.
Short Answer Type Question:
What is the atmosphere? Write about its different layers.
What is Biosphere?
Atmosphere is divided into two main vertical regions the upper portion is Heterospshere and the lower is ______.
Why is Heterosphere called so?
Give Reason:
Exosphere is characterised by aurora Australis and aurora borealis.
This is the earth’s magnetic belt ______.
Atmosphere is divided into ______ different layers.
______ is the lowest layer of the atmosphere.
What is mesosphere?
Highly reactive gas was later names ‘oxygen’ by ______.
