1.What is the average height of the Troposphere?

A) 8 km
B) 13 km
C) 18 km
D) 20 km

2.What phenomenon occurs due to uneven heating in the Troposphere?

A) Precipitation
B) Convection currents
C) Ozone depletion
D) Lightning strikes

3. Which layer of the atmosphere contains the ozone layer?

A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere

4.What is the upper limit of the Mesosphere called?

A) Mesopause
B) Stratosphere
C) Tropopause
D) Ionosphere

5. Which layer of the atmosphere is almost free from clouds and ideal for flying airplanes?

A) Troposphere
B) Stratosphere
C) Mesosphere
D) Thermosphere

6. What is the primary gas composition of the lower portion of the Thermosphere?

A) Nitrogen, molecular oxygen, and atomic oxygen
B) Carbon dioxide
C) Helium and hydrogen
D) Methane and ammonia

7. What is the primary function of the Ionosphere within the Thermosphere?

A) Absorption of ultraviolet radiation
B) Reflecting radio waves for transmission
C) Shielding from harmful solar energy
D) Generating noctilucent clouds

8. Which layer of the atmosphere has very thin air and allows light gases to float into space?

A) Troposphere
B) Stratosphere
C) Mesosphere
D) Exosphere