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प्रश्न
Describe the composition of atmosphere.
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उत्तर
The atmosphere is composed of gases, water vapour, and dust particles. Nitrogen constitutes 78.8%, oxygen contributes 20.94% and argon contributes 0.93% in atmosphere. Other gases include carbon dioxide, helium, ozone, methane, hydrogen, krypton, xenon, and neon, etc. Nitrogen and oxygen together constitute 99% of the atmosphere. Neon, krypton, xenon are scarce gases. The proportion of gases changes in the higher layers of the atmosphere in such a way that oxygen will be almost in negligible quantity at the height of 120 km. Similarly, carbon dioxide and water vapour are found only up to 90 km from the surface of the earth.
संबंधित प्रश्न
What is known as atmosphere?
Mention any two functions of the atmosphere.
Name the constituent gases of atmosphere which scientists consider responsible for climate change.
Name two chief characteristics of atmosphere.
What keeps the atmosphere in a dynamic state?
What is called weather?
Explain the following term/process in detail:
CFCs
Describe the structure of the atmosphere.
What is ‘Atmosphere’?
Define the following
CFC’s
Define the following
Mesosphere
What are the properties of Troposphere?
Give reasons for the following :
The Earth does not experience extremes of temperature as in other planets.
Give reasons for the following :
The amount of water vapour in the atmosphere varies from place to place.
Give reasons for the following :
Solid particles play an important role in the atmosphere.
Give reasons for the following :
As a jet plane flies high in the sky, it leaves a white trail behind.
State two advantages of convectional heating of the atmosphere.
Answer the following questions
What is atmosphere?
Answer the following questions
Which gas creates green house effect in the atmosphere?
How does carbon dioxide create green house effect?
What is the significance of greenhouse gas?
Why do green plants use carbon dioxide?
How does nature balance our life? What is the result if this balance is disturbed?
_______ is the most important gas for the survival of living organisms.
Give Reason:
Nitrogen and oxygen are called permanent gases of the atmosphere.
Who discovered Nitrogen in the Atmosphere? When?
Which one of the following gases constitutes the major portion of the atmosphere?
