Energy stores and systems
Energy stores and systems

A system is the object or group of objects being studied. Everything outside the system is the surroundings, and the boundary decides which energy changes are included.
Step-by-step lessons on Edexcel GCSE Physics 8.1 Energy transfers and work. Each one builds up to exam-style questions. Master the required practical work and core equations early, since both papers can draw on content and maths skills from across the whole specification.