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CAIE IGCSE Physics 2.3.2.2 Convection in Liquids and Gases in Questions

Practise explaining density-driven convection in fluids and applying circulation reasoning to radiators, freezers, kettles and sea breezes with CAIE IGCSE Physics questions and mark schemes.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • Explain convection through density-driven circulation in fluids, and apply it to radiators, freezers, kettles and sea breezes.

CAIE IGCSE Physics 2.3.2.2 Convection in Liquids and Gases in Questions question 1

[Maximum number: 3]

Fig. 3.1 shows a small block of ice floating in a beaker of warm water.

Fig. 3.1

Fig. 3.1

Energy is transferred from the water to the block of ice.

The temperature of the water near the ice decreases first.

Explain how convection causes the temperature of all the water in the beaker to decrease.

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