Magnetism
this type of magnet never loses it magnetism
permanent magnet
repelling magnets have this shape of iron fillings around them
butterfly
magnetic field is created by indroducing _ into a conductor
current
for the right hand rule the thumb represents the direction of _
the two type of magnets are: _ and _
eletromagnets and ferromagnets
attaracting magnets have this shape of iron filling around them
half circles
maglev
deivce used on a house that uses elertomagnets (hint it goes DING DONG)
doorbell
these type of materials are attracted to magnets
ferromagnet materials
these are commonly used to demonstrate magnetic fields
iron filings
elertomagnets are uses do _ on battleships
commincate with the other ally ships
automatic car locks use a _ to lock or unlock the door
soleniod
this magnets only a temporary amout of magnetism
temporary magnet
the area around the bar magnet is called this
magnetic fields
when the current is inceased what happens to the strength of the magnet
the magnet get strong the more the current is increased
this old type of phone from the 1960s to 1970s which uses electromagnets to ring
rotatory phone