Year 9 · Autumn Second Half
Physics
3 lessons from 2 units.
Unit P2 · lesson 5 of 5
Energy has a price. This unit is where the quantity you learned to conserve turns into a number on a meter, a rating on a plug and a line on a bill.
Unit P9 · lessons 1 to 2 of 3
Rubbing does not make charge — it moves electrons, and leaves two objects equally and oppositely charged. Follow that from a duster to the field that reaches across an empty gap.
- 05Fuels and energy resourcesClassifyBurning wood releases carbon dioxide, soot and particulates every time. A nuclear power station releases no carbon dioxide at all while generating. Wood grows back; uranium does not. So what does “renewable” actually tell you?Open this lesson
- 01Charging by rubbingProcessRubbing does not make charge. It moves electrons from one surface to the other, so the two objects end up equally and oppositely charged — and the total is exactly what it was before.Open this lesson
- 02Forces between chargesModelLike charges push apart, unlike charges pull together — and a charged object also pulls on something with no charge at all, which is the case people forget.Open this lesson
Back to all three sciences this half term The whole KS3 Physics course