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Magnetic Field astr.gsu.edu/hbase/magnetic/elemag.html#c1 astr.gsu.edu/hbase/magnetic/elemag.html#c1 champions.com/science/magnetism.htm
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MAGNETISMSection 8.1
Magnetism Magnetism- the properties and
interactions of magnets Interaction between two magnets, called
magnetic force, increases as magnets move closer together.
A magnetic field which exerts the magnetic force, surrounds a magnet, and is strongest closest to the magnet.
Magnetic Field
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/elemag.html#c1
http://www.school-for-champions.com/science/magnetism.htm
Magnetism Magnetic poles – the regions of a magnet
where the magnetic force exerted by the magnet is strongest
All magnets have a north pole and a south pole. Named for the poles of the earth “north” end of magnet points north “south” end of magnet points south
Magnetism Like poles repel, unlike poles attract. Earth has magnetic poles
A compass needle is a small bar magnet that can freely Rotate
A compass need always points north Magnetic materials- iron, cobalt, and
nickel The magnetic field created by each atom
exerts a force on nearby atoms
Magnetic Domains Magnetic domains- groups of atoms with
aligned magnetic poles In a magnet, the like poles of all the
domains point in the same direction Temporary magnets are made by
placing a magnetic material in a strong magnetic field, forcing a large number of magnetic domains to line up
Cutting a bar magnet