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IB Physics SL B 1 11 Conduction Questions

Practise explaining conduction through particle collisions, lattice vibration, electrons and solid materials in exam questions.

Syllabus
First assessment 2025
Course
Physics SL
Level
SL

Exam points

  • Explain conduction through particle vibrations and collisions, including mobile electrons in good metal conductors.
  • Trace conduction through walls, pipes and planetary solids from hot regions to cooler surfaces.
  • Distinguish conduction evidence in solids from bulk fluid motion and identify the role of material structure.

Learn this topic

Study B.1.11—Conduction conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Physics SL B 1 11 Conduction Questions question 1

[Maximum number: 2]

Describe the mechanism of heat transfer by conduction.

The diagram shows a wall separating the inside of a room from the outside. The temperature of the room is kept constant by a heater.

Figure for Question IB Physics SL B 1 11 Conduction Questions question 1 — IB Physics SL

The following data are available:

 Thickness of wall =0.25 m Area of wall =18 m2 Thermal conductivity of wall =1.3Wm−1 K−1 Constant room temperature =22∘C Constant outside temperature =13∘C\begin{aligned} \text { Thickness of wall } & =0.25 \mathrm{~m} \\ \text { Area of wall } & =18 \mathrm{~m}^{2} \\ \text { Thermal conductivity of wall } & =1.3 \mathrm{Wm}^{-1} \mathrm{~K}^{-1} \\ \text { Constant room temperature } & =22^{\circ} \mathrm{C} \\ \text { Constant outside temperature } & =13^{\circ} \mathrm{C} \end{aligned}
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