Advertisements
Advertisements
Question
Briefly state the variations in the vertical distribution of pressure.
Advertisements
Solution
Many factors like the slope of the land, presence of winds, and the temperature affect the pressure of air vertically. The rate of decrease is 100 millibars per 1000 meters of height gained. There is a thin air cover at high altitudes, so the percentage and amount of oxygen are also less.
RELATED QUESTIONS
We do not feel uneasy even under the enormous atmospheric pressure. Give a reason.
Explain the following :
Two holes are made in a completely filled sealed tin can to take out oil from it .
What do the following indicate in a barometer regarding weather : gradual fall in the mercury level
What is meant by the term ‘Atmospheric Pressure’?
Select the correct option.
As we move upwards, the atmospheric pressure
State two advantages of an aneroid barometer.
Name the instrument used to measure atmospheric pressure.
What is the purpose of a barometer? State two major defects of a simple barometer.
Figure shows a child blowing air with a straw near the opening of another straw which has its other end in a soft drink bottle. It was observed that the level of the soft drink in the straw rises up as soon as air is blown over its open end. Which one of the following best explains the reason for rise in level of the drink?
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).
