GCSE›Edexcel GCSE Physics›Mind mapsMagnetismEdexcel GCSE Physics: Mind mapStudy pack PDFAlso for this subtopic:Revision notesFlashcardsSubtopic testCover factsPolesUnlike poles attractLike poles repelNon-contact force through the fieldPermanent or inducedPermanent magnet: always has its own fieldInduced magnet: magnetic only in a fieldInduced magnet quickly loses its magnetismMagnetic materials: cobalt, steel, iron, nickelMagnetismpoles and fieldsNSField linesRun north to south outside the magnetCloser lines mean stronger fieldUniform field: even, parallel linesPlotting compass shows direction at a pointThe EarthCompass points roughly to geographic northEarth behaves like a giant bar magnetEvidence that the core is magneticExam tipsInduced magnet's force is always attractiveSteel keeps magnetism, iron loses it quickly