2G

Magnet notes

  • An permanent magnet always has magnetic properties.
  • Magnets stick to metal but only if they are made with iron or steel.
  • When magnets pull on each other and stick that we say they attract, when magnets push apart, we say they repel.
  • Magnets have a north and a south side. They are called poles.
  • Opposites attract NS, same poles will repel.
  • Magnets can induce a magnetic field, which mean it can cause magnetic properties in a non magnetic metal item. (ex. nail, paper clip)
  • Temporary magnetism, is called induced magnetism.
  • Magnets are surrounded by an invisible magnetic force which acts through space and all non magnetic materials.
  • The magnetic force acting between magnets decreases as the distance between them increases.
  • Magnets only stick to other magnets.