Page 75 - Science Class 6 Times Publication
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showing the north-south direction. Hence, a magnet is a substance
          which attracts magnetic substances and always comes to rest showing
          N-S directions when suspended freely.
          Magnetic and non-magnetic substances

          We can identify magnetic and non-magnetic substances with the
          help of a magnet.


          Activity 7.1
          To identify the magnetic and non-magnetic substances.


          Materials required:  A bar magnet and a collection of different
          substances.

          Procedure
             1.  Collect the substances such as needle, pin, toothbrush, pen,
                 pencil, book, copper wire, comb, cork, glass tube, iron nail, coin,
                 pieces of iron, a steel glass, eraser, spoon, etc.

             2.  Bring each of the above substances close to the bar magnet
                 one by one and observe whether they are attracted by the bar
                 magnet.

          Observation:  Complete  the  following  table  with  the  help  of  your
          observation.

                  Substances attracted                  Substances not attracted
                       by a magnet                              by a magnet












          Conclusion: A magnet does not attract all the substances. It attracts
          only some of the substances.

          The substances which are attracted by a magnet are called magnetic
          substances. For example, iron, cobalt, nickel, etc are magnetic

          Times' Crucial Science and Environment  71                                  Book 6
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