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CAIE IGCSE Physics 2.3.1.2 Thermal Conduction in All Solids in Questions

Practise explaining conduction through vibrating lattice particles and mobile delocalised electrons transferring energy with CAIE IGCSE Physics questions and mark schemes.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • Explain conduction in lattices and metals through vibrating particles and mobile delocalised electrons transferring energy.

CAIE IGCSE Physics 2.3.1.2 Thermal Conduction in All Solids in Questions question 1

[Maximum number: 4]

Fig. 5.1 shows two containers, each filled with hot water.

Fig. 5.1

Fig. 5.1

The outer surface of the metal container is hot.

Question (a)

(a)

Explain how electrons transfer thermal energy through the metal of the container.

[ 3 ]

Question (b)

(b)

The outer surface of the non-metal container is much cooler than the outer surface of the metal container.

Explain why a non-metal conducts thermal energy less well than a metal.

[ 1 ]
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