What Makes a Magnet? (Let's-Read-and-Find-Out Science 2) by Franklyn M. Branley
Author:Franklyn M. Branley [Branley, Franklyn M.]
Language: eng
Format: epub
Publisher: HarperCollins
Published: 2016-02-02T05:00:00+00:00
Picture the smallest bits of iron in your needle. They are
like tiny magnets. Usually, they point in different directions.
When you stroke a magnet along a needle, the iron bits line
upâthe magnetism of one particle is added to another,
making the magnetism stronger.
That explains what happens when you make a magnet.
But lodestone is a natural magnet. Nobody made it. What can
make a natural magnet?
Lightning!
A bolt of lightning has magnetism. Lodestone has a lot
of iron in it. A lightning strike on the right iron-filled rock
can act like lots and lots of magnet strokes all at once.
Scientists are pretty sure that lightning struck the places
where lodestone is found and changed ordinary stone into
magnetic stone.
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