Share Unit 5 Electricity and magnetism
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Label the two types of magnets
natural and artificial
Magnets can also be .................... or .........................
permanent and induced
Complete : All magnets has two ...................................
opposite poles
True or false.Magnetic field is the area around a magnet where the force has an effect.
true
Complete : Magnets attract certain metals such as ................................. , ............................. and ................
iron, nikel and cobalt
True or false : The earth has a core of solid iron that acts like a gigant magnet.
false. core of liquid iron
A............................... is a instrument used for finding your way
compass
...................................... is the relationship between electricity and magmetism.
Electromagnets
True or false.All magnetic materials are metallic.
true
True or false.Electromagnets are objects that didnt act like magnets when an electrical current passes through them.
false
True or false.When we close the circuit, the obect becomes an electromagnet
true
Many .............................................. like blenders use magnets to convert electricity.
home appliances
What is the name of the trains that are made of magnetic levitation?
maglev trains
True or false.When we close a circuit , the object becomes an electromagnet
true
Where did they discover the first natural magnets ?
Ancient Greece and China
True or false.Opposite poles repel each other
false
