Geography
Give a geographical reason for each of the following:
As we go higher, the atmospheric pressure decreases.
Answer
As we go higher upwards, the atmospheric pressure decreases at an average rate of 34 millibars per 300 metres of latitude. It is because the air in the lower layer of the atmosphere is denser than at higher level. The air is denser in lower layer because of gravitational pull of earth and also because the lower layers are compressed under upper layers of atmosphere.
Related Questions
Briefly explain the three chief types of winds.
Give a geographical reason for each of the following:
The Westerlies in the Southern Hemisphere blow with greater force than those in the Northern Hemisphere.
Draw a well labelled diagram showing the pressure and wind belts of the earth.
Give a geographical reason for each of the following:
There is a seasonal shifting in pressure belts.