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Option 3 : Exosphere, Thermosphere, Mesosphere, Stratosphere and Troposphere
The correct answer is Exosphere, Thermosphere, Mesosphere, Stratosphere and Troposphere.
- Our earth is surrounded by a huge blanket of air called atmosphere.
- The atmosphere is divided into five layers starting from the earth’s surface. These are Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere.
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According to the given question, the correct arrangement of the layers of the atmosphere that a roket returning to earth will pass through before it lands on earth is: Exosphere, Thermosphere, Mesosphere, Stratosphere and Troposphere.
Hence, the correct answer is - Exosphere, Thermosphere, Mesosphere, Stratosphere and Troposphere.
- Exosphere:
- The upper most layer of the atmosphere is known as exosphere.
- This layer has very thin air.
- Light gases like helium and hydrogen float into the space from here.
- Thermosphere:
- In thermosphere temperature rises very rapidly with increasing height.
- Ionosphere is a part of this layer.
- It extends between 80-400 km.
- This layer helps in radio transmission.
- Mesosphere:
- This is the third layer of the atmosphere.
- It lies above the stratosphere.
- It extends up to the height of 80 km.
- Meteorites burn up in this layer on entering from the space.
- Stratosphere:
- This layer lies above the troposphere.
- It extends up to a height of 50 km.
- This layer is almost free from clouds and associated weather phenomenon, making conditions most ideal for flying aeroplanes.
- One important feature of stratosphere is that it contains a layer of ozone gas
- Troposphere:
- This layer is the most important layer of the atmosphere.
- Its average height is 13 km.
- The air we breathe exists here.
- Almost all the weather phenomena like rainfall, fog and hailstorm occur in this layer.
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