Question
Download Solution PDFLowest layer of the atmosphere is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Troposphere.
Important Points
- The air is a mixture of several gases and it encompasses the earth from all sides.
- The air surrounding the earth is called the atmosphere.
Key Points
- The troposphere is the lowermost layer of the atmosphere.
- The height of this layer is about 18 km on the equator and 8 km on the poles.
- The thickness of the troposphere is greatest at the equator because heat us transported to great heights by strong convectional currents.
- All phenomena of climate and weather, which physically affects the man, takes place with in this layer.
- The temperature decreases with increasing height of the atmosphere.
- It decreases at the rate of 1 degree Celsius for every 165 m of height.
- This is called Normal Lapse Rate.
- The zone separating the troposphere from the stratosphere is known as the tropopause.
- The air temperature at the tropopause is about – 80 degree Celsius over the equator and about – 45 degree Celsius over the poles.
- The temperature here is almost constant.
Last updated on Jul 23, 2025
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