NCERT Book Class 6 Science Chapter 10 Fun with Magnets

10 Fun with Magnets

P
aheli and Boojho went to a place sticking to the holder. In some pencil
where a lot of waste material was boxes, the lid fits tightly when we close
piled into huge heaps. Something it even without a locking arrangement.
exciting was happening! A crane was Such stickers, pin holders and pencil
moving towards the heap of junk. The boxes have magnets fitted inside
long hand of the crane lowered a block (Fig. 10.2). If you have any one of these
over a heap. It then began to move. items, try to locate the magnets hidden
Guess, what? Many pieces of iron junk in these.
were sticking to the block, as it moved
away (Fig. 10.1)!

Fig. 10.2 Some common items that have
magnets inside them
Fig. 10.1 Picking up pieces of iron from waste

They had just read a very interesting How Magnets Were Discovered
book on magnets and knew immediately It is said that, there was a shepherd
that there must be a magnet attached named Magnes, who lived in ancient
to the end of the crane that was picking Greece. He used to take his herd of
up iron from the junk yard. sheep and goats to the nearby
You might have seen magnets and mountains for grazing. He would take
have even enjoyed playing with them. a stick with him to control his herd. The
Have you seen stickers that remain stick had a small piece of iron attached
attached to iron surfaces like almirahs at one end. One day he was surprised
or the doors of refrigerators? In some to find that he had to pull hard to
pin holders, the pins seem to be free his stick from a rock on the

104 SCIENCE