Download Magnetism Review

Magnetism Review
What are the 2 ends of a
rectangular magnet called?
?
?
North and South Poles
Name a material that
magnets are attracted to.
Iron, nickel, cobalt or rare earth
metals.
True or False. The strength
of a magnetic field can be
made stronger by placing
two magnets together.
True
Draw a rectangular magnet
and its magnetic field.
What are the lines of force
surrounding a permanent
magnet called?
Magnetic Field
What does MRI stand for?
Magnetic Resonance Imaging
Name a practical use for
magnets.
Credit cards, speakers and microphones,
junkyard electromagnet, electric motors,
medicine, compass, magnetic levitation
transport
What is the name of a temporary
magnet that is made by coiling a
wire around an iron core and
running electricity through the
wire?
Electromagnet
What is the name of the area
inside a magnet where all the
electrons are lined up?
Magnetic Domain
What can you do to the
number of wire coils to make
an electromagnet stronger?
Increase the number of coils
What can you do to the
current to make an
electromagnet stronger?
Increase the current
When talking about magnets
what word is the opposite of
attract?
Repel
If you hang a magnet so it is
free to swing and turn, what
have you created?
A compass
True or False: An
electromagnet is a temporary
magnet.
True. They can be turned off and on.
True or False: You can
demagnetize a permanent
magnet by heating it or hitting
it (really hard).
True
True or False: You can
demagnetize a permanent
magnet by heating it or hitting
it (really hard).
True