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Unit 5 Electricity and magnetism

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