A student is given four different materials, several identical beakers, a supply of hot water and the usual laboratory apparatus. The student wants to find out which of the four materials is the most effective thermal insulator.
Describe a method the student could use. Your method should give valid results.
40 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.