Practise AQA GCSE Physics 1.2 Conservation and dissipation of energy with exam-style questions for Foundation and Higher tier. 26 questions covering 1.2.1 Energy transfers in a system and 1.2.2 Efficiency, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.