how do we test for magnetism
Answers
Explanation:
They attract certain materials eg
iron
steel
nickel
cobalt
Magnetic materials are attracted to the poles of the magnet.
On a bar magnet the poles are at either end of the magnet. Poles occur in pairs of equal strength.
One pole - North seeking pole - N pole- pointing roughly to the Earth's North pole.
Other pole - South - S pole
Like poles repel
Unlike poles attract
Force between magnetic poles decreases as their separation increases.
Test for a Magnet
A permanent magnet causes repulsion with one pole when the poles are brought in turn near a suspended magnet.
An unmagnetised magnet material would be attracted to both poles.
Repulsion is the only sure test for a magnet
Magnetism can work over a distance and magnets can exert a force (push or pull) on objects without making contact with them.
Just think about the effect of the Earth's magnetic field on a compass needle.
Answer:
Make a holder for a bar magnet. ...
Bend a paperclip into a hook. ...
Add further paperclips to measure the strength of the magnet. ...
Note the number of paperclips that caused the hook to fall off. ...
Add masking tape to the magnet pole.