Most ozone (about 90%) resides in a layer that begins between 10 and 17 kilometers above the Earth's surface and extends up to about 50 kilometers. This region of the atmosphere is called the stratosphere. The ozone layer absorbs most of the Sun's ultraviolet (UV) radiation.

Correct Option: B

Most ozone (about 90%) resides in a layer that begins between 10 and 17 kilometers above the Earth's surface and extends up to about 50 kilometers. This region of the atmosphere is called the stratosphere. The ozone layer absorbs most of the Sun's ultraviolet (UV) radiation.

The thermosphere is the hottest layer of the atmosphere. It extends from 80 kilometers above the surface of the Earth up to 600 kilometers and can heat up to 1,500 degrees Celsius because it’s very sensitive to solar activity. The air is thin and extremely hot, and there are sparse air molecules in this layer.

Correct Option: A

The thermosphere is the hottest layer of the atmosphere. It extends from 80 kilometers above the surface of the Earth up to 600 kilometers and can heat up to 1,500 degrees Celsius because it’s very sensitive to solar activity. The air is thin and extremely hot, and there are sparse air molecules in this layer.

Troposphere, that extends up to a height of 12 km on an average from the surface of the earth, is the locale of all the vital atmospheric processes which create the climatic and weather conditions on the earth’s surface. About half of the mass of air comprising the entire atmosphere is concentrated in this zone. This is the lowermost layer of the atmosphere.

Correct Option: B

Troposphere, that extends up to a height of 12 km on an average from the surface of the earth, is the locale of all the vital atmospheric processes which create the climatic and weather conditions on the earth’s surface. About half of the mass of air comprising the entire atmosphere is concentrated in this zone. This is the lowermost layer of the atmosphere.

A cloudburst is an extreme amount of precipitation, sometimes accompanied by hail and thunder, that normally lasts no longer than a few minutes but is capable of creating flood conditions. A cloudburst can suddenly dump large amounts of water. However, cloudbursts are infrequent as they occur only via orographic lift or sudden condensation.

Correct Option: B

A cloudburst is an extreme amount of precipitation, sometimes accompanied by hail and thunder, that normally lasts no longer than a few minutes but is capable of creating flood conditions. A cloudburst can suddenly dump large amounts of water. However, cloudbursts are infrequent as they occur only via orographic lift or sudden condensation.

From top to bottom, the Earth’s atmosphere is divided into five main layers, the exosphere, the thermosphere, the mesosphere, the stratosphere and the troposphere. The atmosphere thins out in each higher layer until the gases dissipate in space. The five main layers are: l
Exosphere: 700 to 10,000 km l
Thermosphere: 80 to 700 km l
Mesosphere: 50 to 80 km l
Stratosphere: 12 to 50 km l
Troposphere: 0 to 12 km

Correct Option: D

From top to bottom, the Earth’s atmosphere is divided into five main layers, the exosphere, the thermosphere, the mesosphere, the stratosphere and the troposphere. The atmosphere thins out in each higher layer until the gases dissipate in space. The five main layers are: l
Exosphere: 700 to 10,000 km l
Thermosphere: 80 to 700 km l
Mesosphere: 50 to 80 km l
Stratosphere: 12 to 50 km l
Troposphere: 0 to 12 km