Question

Which of the following is NOT true about atmospheric pressure?

• A. Atmospheric pressure is independent of the surface area of the body.
• B. Atmospheric pressure increases with increase in altitude.
• C. Atmospheric pressure is caused by the weight of air molecules surrounding the earth.
• D. Atmospheric pressure decreases with increase in altitude.

Answer 1

The correct option is B Atmospheric pressure increases with increase in altitude.

The atmospheric pressure is caused by the weight of air molecules surrounding the earth and so when we go at higher altitude the weight of air molecules decreases and hence the pressure also decreases. So the atmospheric pressure is high at low altitudes and is less at high altitudes.