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KEY IDEAS

  • MAGNETS CAN ATTRACT MATERIALS.
  • NOT ALL MATERIALS CAN ATTRACTED BY MAGNETS.
  • MATERIALS MADE OF METALS ARE THOSE ATTRACTED BY MAGNETS.
  • THEY ARE MADE OF IRON, NICKEL AND COBALT.
  • MATERIALS WHICH ARE NON METALS ARE NOT ATTRACTED BY MAGNETS.
  • THESE MAY ME MADE OF RUBBER, PLASTIC OR WOOD.

Key Ideas

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MAGNET HAVE INVISIBLE MAGNETIC FIELD WHICH ATTRACTS OBJECTS MADE OF IRON AND NICKEL.

THERE ARE SEVERAL TYPES OF MAGNETS LIKE:

  • RING MAGNETS
  • RECTANGULAR MAGNETS
  • HORSESHOE MAGNETS
  • BAR MAGNETS

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REMEMBER

  • WHEN THE POLES OF THE TWO MAGNETS ARE PUT NEAR EACH OTHER, THEY HAVE A FORCE THAT WILL EITHER PULL THEM TOGETHER OR PUSH THEM APART.
  • IF THE POLES ARE DIFFERENT, THEN THEY WILL PULL TOGETHER,OR ATTRACT EACH OTHER.(ONE POLE IS A SOUTH POLE AND ONE IS A NORTH POLE.)
  • IF THE POLES ARE THE SAME, THEN THEY WILL PUSH APART, OR REPEL EACH OTHER.(THEY ARE EITHER BOTH SOUTH POLES OR BOTH NORTH POLES.)
  • THE PUSH AND PULL OF A MAGNET IS CALLED MAGNETISM.

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Assessment

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Home Activity

LIST DOWN OTHER MATERIALS AT HOME THAT CAN BE ATTRACTED BY A MAGNET