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Question : 80 of 100
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Solution:
- Troposphere:
- This is the first layer of the atmosphere.
- It extends to a height of 18 km at the equator and 8 km at the poles.
- In this layer, temperature decreases with height.
- It contains more than 90% of the gases in the atmosphere.
- At every 165 m, there is a drop of 1°C (or 6.4°C per km). This is called Normal Lapse Rate of Temperature.
- Tropopause separates Troposphere from Stratosphere.
- All-weather phenomena such as condensation, precipitation and storms, etc. occur in the troposphere only.
- The height at which the temperature stops decreasing is called Tropopause. Here the temperature may be as low as –58°C.
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