Question 1

Which is the lowest layer of the Earth's atmosphere?

Accepted Answer

Troposphere. The Troposphere is the lowest layer of the atmosphere. It contains approximately 75% of the atmosphere's mass and almost all of its water vapor. All weather phenomena occur in this layer.

Question 2

The Ozone layer, which protects the Earth from harmful UV rays, is located in which layer?

Accepted Answer

Stratosphere. The Ozone layer is found within the Stratosphere. It absorbs the majority of the sun's ultraviolet radiation, preventing it from reaching the surface. This layer lies immediately above the troposphere.

Question 3

In which atmospheric layer do most meteors burn up upon entering the Earth's atmosphere?

Accepted Answer

Mesosphere. Most meteors burn up in the Mesosphere due to friction with gas particles. This layer is located above the stratosphere. It is also the coldest layer of the atmosphere.

Question 4

Which atmospheric layer reflects radio waves back to Earth, facilitating wireless communication?

Accepted Answer

Ionosphere. The Ionosphere contains electrically charged particles called ions. These ions reflect radio waves back to the Earth's surface. This layer overlaps with the mesosphere and thermosphere.

Question 5

What is the phenomenon where temperature increases with altitude instead of decreasing?

Accepted Answer

Temperature Inversion. Temperature Inversion occurs when a layer of warm air settles over a layer of cold air near the ground. This is the reverse of the normal environmental lapse rate. It often leads to the trapping of pollutants and fog.

Atmosphere & Weather — Set 1