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Subjects
Social Science
Class 9
Atmosphere

20. Characteristics of Troposphere and Stratosphere

Exercise condition:

6 m.

Choose the correct statements from the following.

1.

The Stratosphere extends from the tropopause to about 80 km above the Earth surface.
Large jet planes normally fly here.
In the Stratosphere temperature increases with an increase in height due to the absorption of the ultraviolet radiation of the Sun by ozone present in this layer.
The Stratosphere is the second layer of the atmosphere.
In the Stratosphere, temperature decreases with an increase in height due to the reflection of the ultraviolet radiation of the Sun by ozone present in this layer.

2.

Weather phenomenon hardly takes place in the troposphere.
The troposphere extends from the surface of the Earth up to 18 km at the poles.
The troposphere extends from the surface of the Earth up to 18 km at the Equator.
Most of the mass of the atmosphere is in the troposphere.
In the troposphere, the temperature decreases with an increase in height.

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