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प्रश्न
We do not feel uneasy even under enormous pressure of the atmosphere above as well as around us. Give a reason.
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उत्तर
We do not feel uneasy under enormous pressure of the atmosphere above as well as around us because of the pressure of our blood, known as blood pressure, is slightly more than the atmospheric pressure. Thus, our blood pressure balances the atmospheric pressure.
संबंधित प्रश्न
What do you mean by atmospheric pressure?
Give reason for the following:
A balloon collapses when air is removed from it.
Describe an experiment to demonstrate that air exerts pressure.
What is an altimeter? State its principle. How is its scale calibrated?
Atmospheric pressure at sea level is 76 cm of mercury. Calculate the vertical height of the air column exerting the above pressure. Assume the density of air 1.29 kgm−3 and that of mercury is 13600 kgm−3. Why the height calculated by you is far less than the actual height of the atmosphere?
How does the atmospheric pressure change with altitude?
State two factors which affect the atmospheric pressure as we go up.
What will be the effect on air pressure if the temperature drops? Why?
On the earth, air pressure is ______
The small variations in pressure that exist largely determine the ______ and ______ patterns of the earth.
