Key
Ideas
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.
A 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
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.
Assessment
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