Atmospheric Pressure (GCSE Physics)

A student measures the force of the air on a square plate of side 0.50 m. If atmospheric pressure is 1.02 × 10^5 Pa, what is the force on the plate?

A sealed tyre gauge reads 220 kPa gauge. What is the approximate absolute pressure if atmospheric pressure is 101 kPa?

An air pocket under a car tyre will change pressure when the tyre rolls over a bump. What causes the local pressure increase under the tyre?

Which of the following is a correct statement about gauge pressure?

A manometer shows a pressure difference when one side is connected to a gas and the other to the atmosphere. Which quantity does the height difference of the liquid in the manometer directly represent?

At sea level atmospheric pressure is about 101 325 Pa. Which of the following is closest to this value in kilopascals?

A column of air exerts pressure because air molecules

A vacuum pump reduces pressure inside a chamber. Which statement about the remaining gas is true as pressure falls?

A closed container at sea level has absolute pressure Pabs. If we define gauge pressure Pg = Pabs - Patm, what is Pg when the container is evacuated to perfect vacuum?

If a vertical column of air has pressure difference ?p = 12 000 Pa between bottom and top, and g = 9.8 N/kg, what is the approximate mass per unit area (areal mass) of that air column? (Use ?p = areal mass × g)

Why does atmospheric pressure decrease as altitude increases?