Advertisements
Advertisements
Question
How does the atmospheric pressure change with altitude?
Advertisements
Solution
Pressure at sea level is taken as 76 cm of MERCURY column which is one atmosphere. But his pressure varies with altitude as the density of air decreases as we rise up and the air becomes rarer. For every 105 m rise in height, pressure decreases by 1 cm of the mercury column.
The graph shows the approximate variation of pressure with altitude.
APPEARS IN
RELATED QUESTIONS
Explain the following :
Two holes are made in a completely filled sealed tin can to take out oil from it .
Convert 1 mm of Hg into pascal. Take density of Hg = 13.6 x 103 kg m-3 and g = 9.8 m s-2 .
Briefly explain the three chief types of winds.
What is the purpose of a barometer? State two major defects of a simple barometer.
The atmosphere is a layer of gases surrounding the planet.
High pressure is called ______.
Define High pressure
The increase in internal energy of 1 kg of water at 100°c when it is converted into steam at the same temperature and at 1 atmospheric pressure will be ______.
(density of steam is 0.6 kg m-3, latent heat of vaporisation of water = 2.25 × 106 J kg-1).
