IGCSE+MAGNETISM

Back to MAGNETISM AND ELECTROMAGNETISM =MAGNETISM= **ACTIVITY** - PLOTTING MAGNETIC FIELDS Use a plotting compass to show the area around magnets: bar, horseshoe or ring. Make it psychedelic.

6.2 recall that magnets repel and attract other magnets, and attract magnetic substances [|ATTRACTION AND REPULSION] Java applet

AURORA BOREALIS - shaped by the Earth's magnetic field (on youku.com, not available outside China, but on youtube) media type="custom" key="11204932"

6.3 recall the properties of magnetically hard and soft materials

HARD AND SOFT MAGNETIC MATERIALS: Materials which are difficult to magnetise and de-magnetise. Soft materials are easy to magnetise and de-magnetise

6.4 understand the term ‘magnetic field line’

MAGNETIC FIELD: The area around a magnet where another magnet would feel a force. MAGNETIC FIELD LINES: Show the direction of the magnetic field. The lines run from North to South. Where the field is strong, they are close together. 6.5 understand that magnetism is induced in some materials when they are placed in a magnetic field

INDUCED MAGNETISM: A magnetic material can be magnetised by being placed in a magnetic field.



6.6 sketch and recognise the magnetic field pattern for a permanent bar magnet and that between two bar magnets

6.7 know how to use two permanent magnets to produce a uniform magnetic field pattern