GCSE Physics
Energy
Energy is a core strand in Physics. Work through the topics below in any order, or follow your course — each guide includes explanations, common mistakes and exam-style practice.
Topic guides
Energy Stores & Transfers
Energy Stores & Transfers is one of the most important GCSE Physics routes because it teaches you how to describe change precisely.
Open guideWork Done
Work is done whenever a force causes an object to move.
Open guidePower
Power is the rate at which work is done, or the rate at which energy is transferred.
Open guideEfficiency
Efficiency is a measure of how much useful energy you get out of a device compared to the total energy you put in.
Open guideNational & Global Energy Resources
National and global energy resources are the sources from which we generate electricity.
Open guideSpecific Heat Capacity
Specific heat capacity is the amount of energy required to raise the temperature of 1kg of a substance by 1°C.
Open guideEnergy Changes in Systems
Energy changes in a system describe how energy is transferred and transformed.
Open guide
Revision strategy
Students often slip on the details explained in our guides — read the “common mistakes” section in each topic.
- Alternate between reading a guide and doing timed questions — don’t only re-read notes.
- Return to this hub anytime; new guides appear automatically as we publish them.