Question

Arrange the following layers of Atmosphere according to the height from Earth's Surface:

1. Stratosphere
2. Mesosphere 
3. Troposphere
4. Exosphere
5. Thermosphere

Select the Correct Option:

1. 1 2 3 4 5
2. 1 3 2 5 4
3. 3 1 2 4 5 
4. 3 1 2 5 4

Answer 1

Correct Answer - Option 4 : 3 1 2 5 4

The correct option is 4) 3 2 1 5 4. 

• Earth's atmosphere consists of following layers according to the height from Earth's Surface:
  • Troposphere - Lowermost Layer. It extends to an average height of 10 Km above the Earth's Surface however the height of the troposphere varies from place to place according to Convection Currents at a place. Nearly all the weather phenomena and Clouds occur in the Troposphere. The tropopause is called the lid of Troposphere above which Stratosphere starts
  • Stratosphere - It extends from top of the Troposphere to about 50 km from Earth's Surface. Ozone Layer is found within Stratosphere. Ozone Layer absorbs harmful Ultraviolet Radiations from the Sun.  The temperature of the layer increases with height. Unlike the Troposphere, the Stratosphere lacks turbulence and weather phenomenon due to which it is calm. It makes it suitable for Jets to fly above Tropopause.
  • Mesosphere - It extends to a height of around 80-85 Km from the Earth's Surface. The temperature of the air decreases with height. In fact, the coldest temperature of the Atmosphere (-90º C) is found near Mesopause. Most of the meteors burn up in Mesosphere. 
  • Thermosphere - It is the layer above Mesosphere and consists of very thin air. Most high energy radiations and some UV radiations are absorbed in this layer which increases the temperature of this layer. It is home to various satellites. It consists of the major parts of the ionosphere which is the main cause of Aurora & Northern Lights and facilitates Radio Communication. It extends to a height of 700-1000 km above the earth's surface.
  • Exosphere - It is a very vague layer and is considered as a "bridge" between Earth and Outer Space. It is the "Final Frontier" of earth's atmosphere, There is no upper limit to this layer and it gradually mixes with Outer Space.