A student determines the specific heat capacity of a metal block using an electric heater. The value the student obtains is larger than the true value. Which is the best explanation?
Some of the energy from the heater was transferred to the surroundings
The thermometer was read before the block had started to warm up
The mass of the block was measured after the block had been heated
The heater was switched on for longer than the student had planned
40 exam-style questions on AQA GCSE Physics 3.2 Internal energy and energy transfers, covering 3.2.1 Internal energy, 3.2.2 Temperature changes in a system and specific heat capacity, and 3.2.3 Changes of state and specific latent heat. Each one has a worked solution and a mark scheme showing where the marks go.