Advertisements
Advertisements
Question
Give reason:
Air pressure decreases with increasing altitude.
Advertisements
Solution
- The proportion of dust in the air, water vapour, heavy gases, etc. is higher in the air closer to the surface of the earth.
- This proportion decreases with increasing altitude. As its effect, the air becomes thinner. This, in turn, results in a fall in air pressure. In this way, air pressure decreases with increasing altitude.
RELATED QUESTIONS
Give reason for the following:
A balloon collapses when air is removed from it.
Why is the barometric height used as unit to express the atmospheric pressure?
At sea level, the atmospheric pressure is 76 cm of Hg. If air pressure falls by 10 mm of Hg per 120m of ascent, what is the height of a hill where the barometer reads 70 cm Hg. State the assumption made by you.
Give reasons for the following:
Temperature and pressure are inversely related to one another.
How does the atmospheric pressure change with altitude?
If there is low pressure at the equator, what will be the condition of air pressure in the Arctic Zone?
What will be the effect on air pressure if the temperature drops? Why?
Air pressure is expressed in ______.
What is meant by atmospheric pressure?
Give reasons:
Why artificial pressure creates in Aircraft?
