Geography
About 90 percent of air mass lies within about …………… from the earth's surface.
- 20 km
- 22 km
- 25 km
- 30 km
Related Questions
The blanket of air surrounding the earth is known as the:
- Ozone layer
- Nitrogen layer
- Lithosphere
- Atmosphere
A clean dry sample of air is made up of …………… percent nitrogen:
- 72
- 77
- 78
- 79
Name the densest layer of the atmosphere.
- Exosphere
- Troposphere
- Stratosphere
- Mesosphere
Name the layers as we move from space to the surface of the earth.
- Thermosphere - Mesosphere - Stratosphere - Troposphere
- Troposphere - Mesosphere - Stratosphere - Thermosphere
- Troposphere - Stratosphere - Mesosphere - Thermosphere
- Thermosphere - Stratosphere - Mesosphere - Troposphere