THE MAGIC OF MAGNETS

Magnets
  Magnets have different shapes and sizes.
Horseshoe magnet
Circular magnet
Ring magnet
Cylindrical magnet
Bar magnet
U-shaped magnet
                  

 Magnetic Forces

 All magnets have a north and a south pole.
 

Unlike poles attract each other- the south pole of the magnet attracts the north pole.
Magnets attract objects made of certain materials like iron and steel, nickel and cobalt. A magnet will attract an iron nail or paperclip.

iron nails
paperclips



Like poles repel each other. The south pole of a magnet will repel the south pole of another magnet. The north pole of a magnet will repel the north pole of another magnet.

Magnets do not attract non-metal objects. Objects that are not attracted by magnets are non-magnetic, such as wood, plastic, rubber, cotton and glass.

wooden  pencils
plastic ruler
Here are some videos that can tell you more about the magnets.



 









 No enough ? Try this :


http://ppdhl.net/courseware/ScienceY3/cd2/lesson/main/index.html









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