magnets

the word magnet comes from the name of the ancient city of magnesia in ----------

(a)  

the force that causes magnetic materials to either attract or repel each other is called ------------

(a)  

a freely suspended magnet will always come to rest in the east-west direction

• true

• false

the pull or push that is exerted by a magnet or magnetic substances is called -------------

• magnetic push

• magnetic force

• magnetic pull

• magnetic attraction

the regions of a magnet where the magnetic force is strongest are called ------------------

• bar magnet

• poles of the magnet

• magnetic substances

alnico is the combination of

• copper, aluminum, nickel

• aluminum, cobalt, iron

• aluminum, nickel, cobalt

unlike poles are not attracted to each other

• true

• false

what are the ways to demagnetize

• heating

• hammering, dropping, or rough handling

• keeping two magnets side-by-side with their like poles next to each other

• all of the above

which of these is not attracted by a magnet

• iron

• cobalt

• wood

• nickel

Magnetite is also called ------------.

(a)