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Name of the student trainee : Bismina R. 
Optional Subject : Social Science 
Candidate code : 13359003 
Year : 2013-2014
Structure of The Atmosphere
INTRODUCTION 
 The air envelope that surrounds the earth is known as 
atmosphere. 
Here, we can see the structure of atmosphere in detail.
Structure of Atmosphere 
 From the earth’s surface upwards, there is a change in 
temperature. 
There are different layers of atmosphere. 
They are: troposphere, stratosphere, 
mesosphere and thermosphere.
TROPOSPHERE 
 Troposphere is the atmospheric layer which is close to 
the earth’s surface. 
 The term is derived from the Greek word ‘Tropos’ means 
to ‘turn’. 
 The traditional zone between the troposphere and 
stratosphere known as tropopause.
STRATOSPHERE 
 It is second layer of atmosphere. 
 The ultraviolet rays of the sun absorb the oxygen atoms which laid 
the formation of ozone in this part of the atmosphere. 
 Ozone layer lies in stratosphere. 
 The transitional zone above the stratosphere is strato- pause.
MESOSPHERE 
 This atmospheric layer extends from 50km-80km above the sea level. 
 The transitional zone where the temperature remains steady is called 
mesopause.
THERMOSPHERE 
 This is an area where the 
temperature increases 
abruptly. 
 The part of the thermosphere, from about 80 
kilometers to 400 kilometers, above the earth 
surface is called ionosphere.
CONCLUSION 
Air extends to a height of several kilometers from the 
surface of the earth. 
The atmosphere is held to the earth by gravitational 
force.
REFERENCE 
Text book of Standard-XI
Bismina ppt

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Bismina ppt

  • 2. Name of the student trainee : Bismina R. Optional Subject : Social Science Candidate code : 13359003 Year : 2013-2014
  • 3. Structure of The Atmosphere
  • 4. INTRODUCTION  The air envelope that surrounds the earth is known as atmosphere. Here, we can see the structure of atmosphere in detail.
  • 5. Structure of Atmosphere  From the earth’s surface upwards, there is a change in temperature. There are different layers of atmosphere. They are: troposphere, stratosphere, mesosphere and thermosphere.
  • 6. TROPOSPHERE  Troposphere is the atmospheric layer which is close to the earth’s surface.  The term is derived from the Greek word ‘Tropos’ means to ‘turn’.  The traditional zone between the troposphere and stratosphere known as tropopause.
  • 7. STRATOSPHERE  It is second layer of atmosphere.  The ultraviolet rays of the sun absorb the oxygen atoms which laid the formation of ozone in this part of the atmosphere.  Ozone layer lies in stratosphere.  The transitional zone above the stratosphere is strato- pause.
  • 8. MESOSPHERE  This atmospheric layer extends from 50km-80km above the sea level.  The transitional zone where the temperature remains steady is called mesopause.
  • 9. THERMOSPHERE  This is an area where the temperature increases abruptly.  The part of the thermosphere, from about 80 kilometers to 400 kilometers, above the earth surface is called ionosphere.
  • 10. CONCLUSION Air extends to a height of several kilometers from the surface of the earth. The atmosphere is held to the earth by gravitational force.
  • 11. REFERENCE Text book of Standard-XI