Download Magnetism

Magnetism
• Magnetism is the attraction of a magnet to
another object (materials that contain
iron).
Magnetic Pole
• Any magnet has two
ends, each one called
a magnetic pole. Any
magnet has two ends,
a north and south
pole. A pole is an
area of a magnet
where the magnetic
force is the strongest.
Interactions of Magnets
• Opposite poles attract, and like poles
repel.
Magnetic Field
• The region of magnetic
force around a magnet is
called the magnetic field.
The lines, called
magnetic field lines, map
out the magnetic field
around a magnet.
• Magnetic field line spread
out from one pole, curve
around the magnet, and
return to the other pole.
Magnetism
• Just like a bar magnet, Earth has a
magnetic field surrounding it and two
magnetic poles. It is called the
magnetosphere.
Magnetic Domains
• A grouping of atoms
that have their
magnetic fields
aligned is known as a
magnetic domain.
• In magnetized
material, all or most of
the magnetic domains
are arranged in the
same direction.
Magnets can be made, destroyed, or broken apart.
• A magnet made of
material that easily loses
its magnet is a temporary
magnet. A material that
keeps its magnetism for a
long period of time is a
permanent magnet.
• By dropping magnets, the
domains can become
unaligned.
• If you break a magnet,
you end up with two
smaller magnets.
Watch Video
• https://www.brainpop.com/science/motions
forcesandtime/magnetism/
• Heritagejhs
• brpop
• https://www.brainpop.com/science/motions
forcesandtime/magnetism/fyi/#tab=2