Energy Stores, Systems and Transfers: Where Does the Energy Go? | GCSE Physics

Energy stores and transfers for GCSE Physics, animated. What a system is, the energy stores (kinetic, gravitational potential, elastic, thermal, chemical and more, as a way of picturing energy), and the three ways energy moves between them: a force doing work, an electric current doing work, and heating. Then the five everyday examples every exam board uses, each with tanks that fill and drain as you watch: a ball thrown upwards, a car hitting a wall, a trolley pushed by a steady force, a car braking, and a kettle boiling water. Conservation of energy in a closed system (with a swinging pendulum whose total never changes), and dissipation: why wasted energy isn't destroyed, just spread out. Two worked examples on a common scale: a ball thrown up with 20 J, with and without air resistance, and a kettle taking in 2000 J, drawn as a bar diagram and an arrow (Sankey-style) diagram. Finishes with three mistakes to avoid, including "energy is used up". Covers: AQA 4.1.1.1, 4.1.2.1 · Edexcel Topic 3 (3.3–3.6) and Topic 8 (8.1–8.4) · OCR Gateway P7.1a–c (Combined Science and separate Physics, both tiers). 0:00 Intro 0:08 Hook 0:40 Systems and stores 1:42 Three ways to transfer energy 2:09 Five examples: moving things 2:59 Five examples: pushing, braking and boiling 3:46 Conservation and dissipation 4:36 Worked example: a common scale 5:20 Worked example: the kettle 6:14 Common mistakes 6:44 Summary Narrated with an AI voice. Worked Example is not affiliated with or endorsed by AQA, OCR or Pearson Edexcel. Exam board names are used only to show which specifications a video covers.