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MAGNETISM SOL 4.3. By: Mrs. Nicholson. MAGNETS. Magnet- an object that pulls iron and steel things to it Magnetism- the force around a magnet Magnetic Field- area round a magnet where the force acts. MAGNETIC POLES. Pole- a place on a magnet where the magnetism is the strongest

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magnetism sol 4 3

MAGNETISMSOL 4.3

By: Mrs. Nicholson

magnets
MAGNETS

Magnet- an object that pulls iron and steel things to it

Magnetism- the force around a magnet

Magnetic Field- area round a magnet where the force acts

magnetic poles
MAGNETIC POLES
  • Pole- a place on a magnet where the magnetism is the strongest

Magnets have 2 Poles North & South

They repel and attract.

Like poles repel. Opposite poles attract.

North poles attract to South poles.

North poles repel North poles.

compass
COMPASS
  • A small magnet where the magnetism is the strongest
  • Always points NORTH
electromagnet
ELECTROMAGNET
  • Electromagnets are made by sending electricity through a wire coil wrapped around an iron rod.
  • The basic idea behind an electromagnet is extremely simple: By running electric current through a wire, you can create a magnetic field
  • They are used in telephones, doorbells or to lift heavy iron and steel.
temporary vs permanent
Temporary magnets are objects that can be magnetized by a magnetic source but lose their power after the source is removed.

This happens when a paperclip becomes magnetic as it touches a permanent magnet.

Permanent magnets keep their magnetism

Temporary vs. Permanent