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Magnetism

  • Game Code: 1629236
  •  English    27     Public
    About how magnets work, parts, electromagnets...
  •   Study   Slideshow
  • What is a magnet?
    It is any objects that has a magnetic force that attracts certain metals like iron.
  •  25
  • What is a magnetic object?
    It is any object attracted by a magnet.
  •  20
  • Which are the 4 types of magnets?
    Permanent magnets, induced magnets, natural magnets and electromagnets.
  •  15
  • Tell 4 examples of electromagnets.
    TVs, computers, earphones, tablets, ebooks, trains, clocks, fans etc.
  •  10
  • What object can we use to orient our selves?
    The compass
  •  5
  • Who discover that electric current can create a magnetic field?
    Hans Christian Orsted
  •  20
  • Who invented the electromagnets?
    William Sturgeon
  •  20
  • What happen to these magnets?
    They attract each other because opposite magnets attract each other.
  •  10
  • What happen to these magnets?
    They attract each other because identical magnets attract each other.
  •  10
  • True or False. All metals are magnetic.
    False, Some metals are magnetic like iron.
  •  5
  • True or False. Electromagnets are useful because we can turn them on and off.
    True
  •  5
  • True or False. A few everyday objects content electromagnets.
    False. Many everyday objects content electromagnets.
  •  5
  • True or False. Two electromagnets are never going to attract each other, they one repel each other.
    False. Two magnets can attract or repel each other.
  •  5
  • True or False. In a magnet electrons move in different directions.
    False. They move always in the same direction.
  •  5
  • Say two advantages of the Earth's magnetic field.
    Protect us from harmful UV rays and solar wind. It can guide us with a compass.
  •  15
  • Is a golden ring a magnetic object?
    NO
  •  5
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