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CAIE IGCSE Physics 2.3.2.1 Convection Is an Important Method of Questions

Practise explaining convection as thermal energy carried by moving fluid in circulation, with water and room-air examples using CAIE IGCSE Physics questions and mark schemes.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • Explain convection as thermal energy carried by moving fluid in circulation, and identify it in water and room-air contexts.

CAIE IGCSE Physics 2.3.2.1 Convection Is an Important Method of Questions question 1

[Maximum number: 2]

Fig. 4.1 shows part of a container used to store a mixture of liquid and gaseous oxygen.

Fig. 4.1

Fig. 4.1

The temperature of the liquid oxygen is −160∘C-160^{\circ} \mathrm{C}.

The container is made of steel and there is a vacuum between the inner and outer walls. The outer wall of the container is at room temperature.

State two methods of thermal energy transfer that a vacuum prevents.

1

2

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