Atmosphere of the Earth | kullabs.com

Note on Atmosphere of the Earth

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Atmosphere of earth

Layer

Thickness

Temperature

Gasses found

Remarks

Troposphere

0-16 km

15Ëš to 56 ËšC

N2, O2, Co2

Most dense

Stratosphere

16-50 km

-56 Ëš to -2 ËšC

O3 (Ozone)

Ozonosphere

Mesosphere

50-80 km

-2 Ëš to -96 ËšC

No+ , O2+

-

Thermosphere

80-720 km

-96 Ëš to 1200 CËš

No+ ,O2+,O+

Ionosphere

Exosphere

720* km

1200Ëš to 6000ËšC

H2, He

Fringe region

Troposphere:

A layer of atoms near the surface of the earth in which living organism live is called troposphere. In this layer, 95% of air is found. The thickness of troposphere varies from 0-16 km. The upper boundary of the troposphere is called tropopause.

Stratosphere:

Stratosphere is extended to 16-50 km. The atmosphere of the stratosphere is called Ozonosphere and in the stratosphererain does not occur. The temperature increases in thestratosphere due to absorption of ultra-violet rays.

Mesosphere:

Mesosphere starts from the Stratopause layer. The level of the thickness of mesosphere varies from 50-80 km. Menopause is the uppermost layer of the mesosphere. Its temperature varies from -2Ëš to -100Ëš C. The temperature decrease in mesosphere due to thin gas layer and the absence of ozone gas

Thermosphere(Ionosphere):

In thermosphere, radio waves are reflected and it is extended from 80-720 km. The temperature of thermosphere varies from -96Ëš to 1200ËšC. Thermosphere is also called ionosphere. It is called ionosphere because ionization process occurs in ionosphere.

Exosphere:

The other name of exosphere is Fringe Region. The level of thickness of exosphere varies above 720 km and its temperature is 1200Ëš to 6000Ëš C. The exosphere is also known as helium zone. It is also known as helium zone due to abundance of helium.

  • Different types of layers of atmosphere are :
  • -Troposphere
  • -Stratosphere
  • -Mesosphere
  • -Thermosphere
  • -Exosphere
.

Very Short Questions

0%
  • Layer of atomsphere near the surface of the Earth in which living organisms live is ______.

    Troposphere
    Stratosphere
    Exosphere
    Thermosphere
  • How much percent of air is found in Troposphere layer?

    80%
    72%
    68%
    75.06%
  • What do you call upper boundary of troposphere?

    exospause
    Tropopause
    Stratopause
    mesopause
  • What do we call the atmosphere of stratosphere?

    Ionosphere
    Most dense
    Ozonosphere.
    Fringe region
  • At what level the thickness of mesosphere varies?

    80-720 Km
    16-50 km
    50-80km
    0-16 km.
  • What is the other name of exosphere?

    Ozonosphere.
    Most dense
    Ionosphere
    Fringe region
  • What is the temperature of exosphere?

    1000 to 4000 degree celsius
    1200 to 6000 degree celsius.
    120 to 600 degree celsius
    1800 to 4000 degree celsius
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