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A robotic research probe is exploring a liquid methane sea on Saturn's moon Titan. The probe descends vertically from a depth of 4.20 m4.20\text{ m}4.20 m to a depth of 28.60 m28.60\text{ m}28.60 m below the surface of the sea.

Given:

  • density of liquid methane =450 kg/m3= 450\text{ kg/m}^3=450 kg/m3
  • gravitational field strength on Titan =1.35 N/kg= 1.35\text{ N/kg}=1.35 N/kg
a.

Explain why the fluid pressure on the probe increases as it descends deeper.

[2]
b.

Calculate the increase in pressure on the probe. State the unit.

[3]

Pressure and pressure differences in fluids (physics only) Questions

Practise AQA GCSE Physics Pressure and pressure differences in fluids (physics only) with exam-style questions for Foundation and Higher tier. 27 questions covering Pressure in a fluid and Atmospheric pressure, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Pressure and pressure differences in fluids (physics only) Questions

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