Year 9 · Spring First Half
Physics
3 lessons from 2 units.
Unit P9 · lesson 3 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.
Unit P10 · lessons 1 to 2 of 5
Magnetism and electromagnetism
A magnet does not have to touch anything to act on it — and only one of the things it does is proof that the other object is a magnet too. Follow that from two bars on a track to the field a current makes, and to the motor that field turns.
- 03Electric fieldsModelNothing crosses the gap. A charged object changes the space around it instead, and anything charged that arrives in that space feels a push or a pull straight away.Open this lesson
- 01Magnets and polesContrastEvery magnet has two ends that behave oppositely, and only one of the things a magnet does is proof that the other object is a magnet too.Open this lesson
- 02Magnetic fieldsInvestigationThe space around a magnet is not empty. A compass needle finds a direction at every point in it, and joining those directions up is the whole of what a field line is.Open this lesson
Back to all three sciences this half term The whole KS3 Physics course