GCSE Science

Electromagnetism * whenever there is wire with a current going through it * there is a (small) magnetic field around it Right hand rule * thumb is the current * fingers are the magnetic field How to

Field lines * always draw from north to south * like poles repel * unlike poles attract * equally spaced * draw 3-4 lines at least Using a compass * place the compass close to one end of the

Triple science only An object will float if * Density of object is smaller than or equal to density of water * ⁠object displaces a weight of water equal to its own weight * ⁠upthrust >