Share Electricity and Magnetism
Save to Folder
It attracts certain metals, such as iron, nickel and cobalt.
Magnets
It is the ability to attract megnetic materials.
Magnetism
The mineral magnetite is a ___.
natural magnet.
They are naturally magnetic pieces of magnetite.
lodestones
Permanent magnets never lose their ___.
magnetism
Induced magnets only have a ___.
temporary magnetic force
Artificial magnets are made by ___.
people
The Earth's core is made up of liquid magnetite. ( True or False ) Correct the false ones.
False. It is made ofliquid iron.
The earth's core acts as a giant magnet, creating an enormous magnetic field. ( True or False ) Correct the false ones.
True
The earth's magnetic poles are in exactly the same place as its geographical poles. ( True or False ) Correct the false ones.
False. They are near the geographical poles but not exactly in the same place.
The earth's magnetic field protect's us from harmful cosmic radiation. ( True or False ) Correct the false ones.
True
If we put two magnets together, their opposite poles ( north and south ) will ___ each other.
attract
If we put wo magnets together, their identical poles ( N and N ; S and S) will ___ each other.
repel
It is an instrument used for finding your way.
compass
The compass has a magnetised needle that always points north and a diagram on its face, called ___.
rose
It is the relationship between electricity and magnetism.
Electromagnetism
