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Unit 3 Review: 6th Grade

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    Magnetism and electricity
  •   Study   Slideshow
  • What's the name of this part?
    a coil
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  • What's inside of the second coil? Which coil acts as a stronger magnet? Which one is an electromagnet?
    The coil with the iron rod inside is a stronger magnet. It's an electromagnet because it's magnetic only when an electric current passes through the coil.
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  • Electricity produces ... and magnetism produces ...
    magnetism; electricity
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  • This is one type of ... How does it work? (Hint: explain what moves)
    electromagnetic generator; The magnet moves inside the coil, which produces electricity.
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  • This is one type of... How does it work? (Hint: explain what moves)
    electromagnetic generator; The coil turns between two magnets, which produces electricity.
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  • When the LIKE poles of two magnets come close, they will...
    repel each other
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  • When the UNLIKE poles of two different magnets come close, they will...
    attract each other
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  • This mineral is an example of a ... magnet. It's called...
    natural; magnetite
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  • Explain what happens when you cut a magnet in half. (Hint: think about the poles)
    It creates smaller magnets with two different poles
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  • What is the name for the invisible area around a magnet (where the magnet can attract and repel)?
    the magnetic field
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  • Imagine you're holding a compass. 1) Which GEOGRAPHIC pole does the needle point to? 2) Which MAGNETIC pole does it point to?
    1) north 2) south
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  • What is the Earth's core composed of? This makes the Earth act like a giant...
    a mixture of very hot iron and nickel; MAGNET!
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  • Which of these machines use electric motors?
    blender, toaster, washing machine, microwave, hairdryer, and fan!
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  • What does the hand mixer use to work? What parts does it have?
    an electric motor; a coil between 2 magnets
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  • Electric motors transform ... energy into ... energy (movement).
    electrical; mechanical
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  • True or false? Wind turbines use electric motors to work. Justify your answer.
    False! Electric motor = electric current -> movement; electric generator = movement -> electric current
  •  20