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CAIE IGCSE Physics Pressure Question Bank

Practise solid and liquid pressure through force, contact area, density and depth, including unit conversions and explanations of everyday pressure effects.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • calculate solid pressure as normal force divided by contact area in pascals
  • use p = ρgh for liquid pressure and convert depth or density before substitution
  • explain pressure changes by comparing force, contact area, liquid depth or density

Covered syllabus points

1.8.1—Pressure as force per unit area1.8.2—Pressure varies with force and area in1.8.3—Qualitatively how the pressure beneath1.8.4—Recall/use: for the change in pressure

1.8 Pressure question 1

[Maximum number: 3]

Question (a)

(a)

Define pressure.

[ 1 ]

Question (b)

(b)

Describe how pressure in a liquid varies with its depth and with its density.
variation with depth
variation with density

[ 2 ]

1.8 Pressure question 2

[Maximum number: 7]

Question (a)

(a)

Fig. 3.1 shows a person moving across an ice-covered pond to reach a ball on the ice.

Fig. 3.1

Fig. 3.1

Explain why this way of moving across the ice is safer than walking. Use your understanding of pressure in your answer.

[ 3 ]

Question (b)

(b)

Fig. 3.2 shows a side view of the pond with a layer of ice floating freely on the water.

Fig. 3.2

Fig. 3.2

The surface area of the pond is 5.0 m25.0 \mathrm{~m}^{2}.
The mass of the ice is 690 kg.
The density of water is 1000 kg/m31000 \mathrm{~kg} / \mathrm{m}^{3}.
Point X is 0.45 m below the ice.
Calculate the pressure at point X due to the ice and the water.
pressure =

[ 4 ]
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