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Magnetism
BY ERIK, BRIANNA, MICHAEL, WYATT
The properties or effects of magnetic fields. There
is magnetism in credit cards, phones, and the
earth. On Earth one needs a sensitive needle to
find magnetic forces, and out in space they are
usually a lot weaker. But beyond the dense
atmosphere, such forces have a much bigger
role, and a region exists around the Earth where
they dominate the environment, a region known
as the Earth's magnetosphere. That region
contains a mix of electrically charged particles,
and electric and magnetic rather than gravity
determine its structure. We call it the Earth's
atmosphere.
 Magnetism is a force that acts at a distance
due to a magnetic field. This field is caused by
moving electrically charged particles or is
inherent in magnetic objects such as a
magnet. A magnet is an object that exhibits a
strong magnetic field and will attract
materials like iron to it. Magnets have two
poles, called the north and south poles. Two
magnets will be attracted by their opposite
poles, and each will repel the like pole of the
other magnet. Magnetism has many uses in
modern life.
wwwistp.gsfc.nasa.gov/Education/Imagnet.html
http://www.school-forchampions.com/science/magnetism.htm
http://www.mcwdn.org/Physics/Magnetism.ht
ml.com