Magnets

Isabella Creeley

Magnets are pieces of iron or steel that possesses the property of attracting certain substances, as iron.

Electromagnet are made of soft metal core made into a magnet by the passage of electric current through a coil surrounding it.


Magnetism is a physical phenomenon produced by the motion of electric charge.

A permanent magnet retains its magnetic properties for a long time. A temporary magnet acts as a magnet only as long as it is in the magnetic field produced by a permanent magnet or an electric current.


Superconductors are substances capable of becoming superconducting at sufficiently low

temperatures.
Magnets were discovered by a Cretan shepherd named Magnes.
  • Mercury has a magnetic field.
  • Earth has a magnetic field.
  • Jupiter has a magnetic field.
  • Saturn has a magnetic field.
  • Uranus has a magnetic field.
  • Neptune has a magnetic field.
  • The Sun has a magnetic field.
  • North poles point north, south poles point south.

  • Magnetic forces attract only magnetic materials.

  • Magnetic forces act at a distance.
  • While magnetized, temporary magnets act like permanent magnets.
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Magnets can make life easier because they are used in modern equipment such as motors in cars and in speakers.