Lesson 4.5.5.1

4.5.5.1 Pressure in a fluid Quiz: AQA Physics, Unit 5

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 4.5.5.1, Pressure in a fluid: 20 multiple choice questions for the AQA GCSE Physics (8463), Unit 5: Forces, written with Revision Ninja.

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The 20 questions

  1. Which states of matter are classified as fluids?

    • Solids and liquids
    • Solids and gases
    • Plasmas and solids
    • Liquids and gases

  2. In what direction does the force caused by fluid pressure act on a surface?

    • Radially inward
    • Parallel
    • At 45 degrees
    • At right angles

  3. The unit of pressure is the:

    • Pascal, Pa
    • Newton-metre, N m
    • Newton per metre, N/m
    • Newton per second, N/s

  4. A force of 80 N acts normal to a surface of area 0.5 m². What is the pressure?

    • 40 Pa
    • 400 Pa
    • 160 Pa
    • 0.00625 Pa

  5. A force of 300 N acts on an area of 0.02 m². What is the pressure?

    • 1.5 × 10⁴ Pa
    • 1.5 Pa
    • 6 Pa
    • 150 Pa

  6. A 10 N force produces a pressure of 5 Pa. What area is it acting on?

    • 2 m²
    • 0.5 m²
    • 15 m²
    • 50 m²

  7. For a constant force, what happens to pressure when contact area decreases?

    • Stays constant
    • Increases
    • Drops to zero
    • Decreases

  8. Which equation calculates the pressure due to a column of liquid?

    • height × density × g
    • force × area
    • mass × volume
    • height × force

  9. (HT only) A column of liquid is 0.5 m high with density 1000 kg/m³ and g = 10 N/kg. What is the pressure at the bottom?

    • 500 Pa
    • 5000 Pa
    • 20 000 Pa
    • 50 Pa

  10. (HT only) What is the difference in pressure between depths of 2 m and 5 m in water, where density is 1000 kg/m³ and g = 10 N/kg?

    • 30 000 Pa
    • 10 000 Pa
    • 3000 Pa
    • 70 000 Pa

  11. What two factors determine the pressure at a point in a liquid?

    • Speed and gravity
    • Mass and volume
    • Area and force
    • Height and density

  12. A partly submerged object experiences greater pressure on which part?

    • Right side
    • Top surface
    • Left side
    • Bottom surface

  13. (HT only) The resultant upward force on a submerged object caused by the pressure difference is called:

    • Friction
    • Weight
    • Tension
    • Upthrust

  14. Which factor determines whether an object floats or sinks in a liquid?

    • Surface area
    • Total mass
    • Object volume
    • Relative density

  15. (HT only) Compared with a point near the surface, the pressure at the bottom of a deep tank of liquid is:

    • Greater
    • Zero
    • The same
    • Smaller

  16. A 2 kg block has weight 19.6 N and rests on a table with contact area 0.01 m². What pressure does it exert on the table?

    • 1960 Pa
    • 196 Pa
    • 19 600 Pa
    • 19.6 Pa

  17. Which pressure is greater?

    • 5 N on 0.5 m²
    • 2 N on 0.2 m²
    • 10 N on 0.5 m²
    • 10 N on 0.1 m²

  18. In the pressure equation p = F ÷ A, what does A represent?

    • Acceleration
    • Amplitude
    • Surface area
    • Altitude

  19. (HT only) A diver is 10 m below the surface of sea water with density 1025 kg/m³ and g = 10 N/kg. What is the pressure due to the water column?

    • About 102 500 Pa
    • About 1025 Pa
    • About 10 250 Pa
    • About 1 025 000 Pa

  20. A box of weight 20 N sits on a floor with a contact area of 0.2 m². What pressure does the box exert on the floor?

    • 400 Pa
    • 100 Pa
    • 10 Pa
    • 4 Pa

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