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Fluid Mechanics: Pressure MCQ

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PressureMediumQuestion 30968

Question

Barometric pressure decreases with altitude because:
  1. A
    Air gets hotter
  2. B
    Less air mass is above
    Correct
  3. C
    Density of air increases
  4. D
    Gravity increases

Correct answer

Less air mass is above

Explanation

Atmospheric pressure = weight of air column above. As altitude increases, less air is above, so pressure decreases.

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