Permanent & induced magnets

• What is a magnetic material?

  Any object influenced by a magnetic field
• What distinguishes an actual magnet from a magnetic material?

  An actual magnet produces a magnetic field
• Which elements are commonly known as magnetic materials?

  Cobalt, iron, and nickel
• Why is nickel not always a magnet?

  Only some pieces of nickel are magnets
• What acronym can help remember common magnetic elements?

  NCIS
• What are permanent magnets?

  Magnets that produce a magnetic field constantly
• What are induced or temporary magnets?

  Magnets that have a magnetic field temporarily
• How is an induced magnet created?

  By placing a magnetic material in a magnetic field
• What happens to an induced magnet when removed from a magnetic field?

  It loses its magnetism
• What are magnetically soft materials?

  Materials that lose magnetism quickly
• What are magnetically hard materials?

  Materials that lose magnetism slowly
• What is the relationship between permanent and induced magnets?

  The force between them is always attractive
• Why does the left side of nickel become a north pole when induced?

  Because the force is attractive from the permanent magnet
• What happens to the magnetism of nickel and iron?

  They lose their magnetism quickly
• What is the main characteristic of steel as a magnetic material?

  It loses magnetism more slowly
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