Page 140 - Science Class 06
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Magnet
• Discovery of Magnet • Proper es of Magnet
• Magne c Compass • Natural and Ar ficial Magnets
• Making an Ar ficial Magnet • Taking Care of Magnets
Have you ever wondered that how report
card or shopping list stays on the fridge
even a er being le there for weeks on
1. A magnet creates an invisible area
end? Only held there by the applica on of
of magne sm all around, is called a
one ny flip flop magnet bought for you by magne c field.
some aunt who went away last year! Well,
2. If you run a magnet a few mes
here we’ll look into the wonderful world of
over an unmagne sed piece of a
magnets, from the natural to the less so
magne c material (such as an iron
natural and the many uses of these objects nail), you can convert it into a
have. magnet as well. This is called
A magnet or a magne c material is an magne sa on.
object that has two poles— north and
south, that a racts other magne c objects There are numerous types of magnets –
and s cks them together. They do this they include natural magne c materials,
through a rac on. The poles a ract each such as alnico which is an iron alloy and
other, so south gravitates toward north and electromagnets which are created by coiled
north toward south. But if you try and put wire and a current going through it. Unlike
the same two poles together, they will repel alloys (like alnico), the magne sm of electro-
each other constantly. But you already knew magnets ceases as soon as the electricity
that, right? stops flowing, which can be very handy for
an array of the modern uses of magnets.
140 Science-6
