Question

What are the first three layers of atmosphere and explain them?

Answer 1

Instructions:

• Extent
• Significance

Solution:

• Troposphere
  • The lowest layer of the atmosphere is the troposphere.
  • The layer extends up to 8 kms at the poles and up to 18 kms at the Equator.
  • The upper limit of the troposphere is called the tropopause.
  • Almost all weather phenomena take place in this layer. Hence it is called the weather making layer.
  • Temperature decreases with increasing height.
• Stratosphere
  • Lies Above Troposphere.​
  • The layer extends to a height of 50 Kms above the earth surface.
  • The upper limit of the stratosphere is called stratopause.
  • Temperature increases with increase in height.​
  • Large jet planes fly in this layer.​
  • Concentrated with ozone molecules so referred as ozonosphere.
• Mesosphere
  • Mesosphere extends between 50km and 80km.
  • The temperature decreases with increasing height.
  • Most of the meteors nearing the earth get burned here.
  • The uppermost limit of the mesosphere is the mesopause.