Magnetism Interactions
What pole attracts to a north pole?
South
What is the opposite of the south pole?
North pole?
What object uses a charged needle to tell direction?
A compass
What uses + and - symbols?
Static
What causes the earth to be magnetic?
Moltan iron core
T/F Both South and North poles attract to an unmagnetized ferromagnetic object
True
What do scientists use to record their theories about magnetism?
Model
What three things do you need to create a compass?
Charged Nail, Styrofoam, Water
Does magnetism effect plastics?
No
Where is magnetic south?
Geographic North
T/F Rubbing a nail with either N or S results in the same polerization?
False
What are objetcs that we use to reprisent a compass?
Nails
What type of magnets do bullet trains use to run?
Electromagnets
How would a positicly charged object effect the north tip of a magnet?
It wouldnt
T/F Does earth behave like a magnet?
T
What repels a south pole?
South pole
What planet has a magnetic poles?
Earth
What allows bullet trains to "hover"?
Repelling forces within the magnets
True or false, They both cause attraction and repulsion?
True
Why does striping on the ocean floor happen?
Shifting magnetic poles over time
What causes a magnitized object to become unmagnitized?
Magnetic domains unalign
What magnetized pole woud attract to the north pole?
South
What important medical machine uses magnets?
MRI
Is a ferromangetic material and conductor or an insulator?
Conductor
What material can be magnetized?
Ferromagnetic materials