GCSE Physics

Energy: Stores and Transfers

Year 9, unit 2. Nine lessons on energy stores, kinetic, gravitational and elastic potential energy, springs, conservation of energy, power, wasted energy and efficiency.

Workbook and answers

Workbook Part 1Lessons 1–3Energy stores and systems, the kinetic store, the gravitational potential store. Ends with key words, a progress tracker, quick answers and the equation toolkit.Workbook PDFAnswers PDF
Workbook Part 2Lessons 4–6Stretching springs, the elastic potential store, conservation of energy. Ends with key words, a progress tracker, quick answers and the equation toolkit.Workbook PDFAnswers PDF
Workbook Part 3Lessons 7–9Power, wasted energy, efficiency. Ends with key words, a progress tracker, quick answers and the equation toolkit.Workbook PDFAnswers PDF
Unit reviewAfter Lesson 9: mixed exam-style questions on the whole unit (40 marks), a fix-it log and the equation toolkit (7 pages)Review PDFAnswers PDF
Slide deckThe slides from lessons, with interactive models and a revision note under most slides.Open the deck

Prep

A one-page homework after every two lessons: up to three Do Now questions from earlier lessons, then short questions on the key ideas of the latest lessons. Each is out of 10.

Prep 1: Stores and the kinetic storeAfter Lessons 1–2, 1 page, 10 marksEnergy stores and transfers, describing a transfer, kinetic energy.Prep PDF
Prep 2: Lifting and stretchingAfter Lessons 3–4, 1 page, 10 marksGravitational potential energy, stretching springs, spring constant.Prep PDF
Prep 3: Springs, swings and conservationAfter Lessons 5–6, 1 page, 10 marksElastic potential energy, conservation of energy, energy dissipated.Prep PDF
Prep 4: Power and wasted energyAfter Lessons 7–8, 1 page, 10 marksPower as the rate of energy transfer, wasted energy, reducing it.Prep PDF
Prep 5: How much is useful?After Lesson 9, 1 page, 10 marksEfficiency as a decimal and a percentage, Sankey diagrams.Prep PDF

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