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