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MAGNETS

WHAT IS A MAGNET?
A magnet is a piece of metal that has the power to attract small pieces of iron.For example,a paper clip clings to a magnet because it is attracted to the magnet.
Magnet can be found in different shapes and sizes.Do you know that there are various types of magnet?Let us take a look at some common magnets.


Every magnet has two ends or poles.One end is called the North Pole.The other end is the South Pole.


Magnets can attract or repel each other.Magnets repel each other when the same poles are placed close together.


Magnets attract each other when the opposite poles are placed close together.


EXERCISE ( 3a )



THE PROPER WAY TO HANDLE MAGNETS
Magnet must be handle properly so that they will not lose their magnetic power.Magnets must be stored with keepers to keep their strength.


The other ways to take care of magnets:

EXERCISE ( 3b )


WHAT MATERIALS CAN MAGNETS ATTRACT?
Not all things can be attracted by a magnet.Materials that can attracted by a magnet are called magnetic materials.Examples of magnetic materials are iron and steel.
Here are some objects that magnets can attract.

Materials that cannot attracted by a magnet are called non-magnetic materials.Examples of magnetic materials are rubber,glass,wood,plastic and cloth.
These objects cannot be attracted by magnets.

EXERCISE ( 3c )