An outdoor equipment designer is choosing a material for the lid of an insulated drinks container. Four different sheet materials are available. The designer has identical metal cups whose sides and bases are surrounded by the same insulation. The designer also has scissors, a ruler, hot water, a measuring cylinder, temperature probes and stopclocks.
Describe a method the designer could use to compare the four materials. The method should give valid results.
104 exam-style questions on AQA GCSE Physics 1.2 Conservation and dissipation of energy, covering 1.2.1 Energy transfers in a system and 1.2.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.