CAIE IGCSE Physics Thermal Transfer Applications

Practise applying conduction, convection and radiation to pans, rooms, insulation, windows, solar heaters and containers, with each feature physically justified.

Exam points

match conducting bases, insulating handles and trapped-air layers to their intended roles
explain how lids, glazing or insulation reduce conduction, convection or evaporation
combine black absorbers, metal conductors and insulation in solar or hot-water systems

Covered syllabus points

2.3.4.1—Some of the basic everyday 2.3.4.2—Applications/consequences where

[Maximum number: 3]

A student carries out experiments on the cooling of the hot drink described in (a), with and without the holder in place. He finds that the holder only reduces the rate of cooling slightly.

Suggest and explain another action that reduces the rate of cooling more effectively. suggestion
explanation

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Covered syllabus points

2.3.4 Consequences of thermal energy transfer question 1