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प्रश्न
State two factors which affect the atmospheric pressure as we go up.
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उत्तर
Factors that affect the atmospheric pressure are:
(i) Height of air column
(ii) Density of air
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संबंधित प्रश्न
Fill the missing word in the blank spaces in the following statements:
Air moves from a region of __________ pressure to a region of ________ pressure.
State two experiences that made you think that air exerts pressure.
What do you understand by atmospheric pressure?
Illustrate with the help of a labelled diagram of a simple barometer that the atmospheric pressure at a place is 76 cm of Hg.
State two uses of a barometer.
Mention two demerits of a simple barometer and state how they are removed in a Fortin barometer .
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 .
Give reasons for the following:
Temperature and pressure are inversely related to one another.
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?
______ is used to show the distribution of air pressure.
