7.) Magnetism Flashcards
(32 cards)
What does magnetism describe?
The ability of magnets to attract and repel other magnets without touching them.
What are the two poles of magnets called?
North and south.
What poles attract each other?
North and south.
What type of force is attraction in magnets?
Non contact force.
What two poles repel each other?
South and south or north and north.
What type of force is repulsion in magnets?
Non contact force.
Where are the magnetic forces the strongest in magnets?
Their poles.
Name three magnetic materials.
Iron, Nickel, and Cobalt.
What can magnetic materials turn into?
A temporary magnet.
Do magnetic materials always act like a magnet?
No.
What are magnetic materials attracted to?
A magnet.
Can magnetic materials be repelled by a magnet?
No.
True or false: Only two magnets can repel each other.
True.
Will non magnetic materials ever be attracted by magnets?
No.
Are permanent magnets always magnetic?
Yes.
Why are permanent magnets always magnetic?
They produce their own magnetic field.
When will a magnetic material temporarily become a magnet?
When it is close to a permanent magnet.
What are induced magnets?
Magnetic materials that become magnets when they are in a magnetic field.
What happens when an induced magnet moves away from a permanent magnet?
It will stop being a magnet.
What is induced magnetism?
When magnetic materials become magnets when they are in a magnetic field made by permanent magnets, but when they are moved away from the permanent magnet, they stop being a magnet.
What does a permanent magnet induce in a magnetic material and why?
Creates temporary poles so that the magnetic material is attracted to the permanent magnet.
What are magnetic forces?
Forces between magnets.
What causes magnetic forces?
Invisible magnetic fields.
What does every magnet create around itself?
A magnetic field.
