Science 8 Chap.18

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  1. What are a few examples of magnetic materials?
    Iron, cobalt, nickel, and gadolinium
  2. Define Electromagnetism
    the interaction between electricity and magnetism.
  3. What is a solenoid?
    a coil of wire with an electric current in it.
  4. What is an electric motor?
    a device that converts electrical energy into mechanical energy.
  5. What is a Galvanometer?
    an instrument that detects, measures, and determines the direction of a small electric current.
  6. What are three ways to induce a current in a circuit?
    Move a circuit into or out of a magnetic field

    Rotate a circuit in a magnetic field

    Vary the intensity of the magnetic field
  7. What is a generator?
    a machine that converts mechanical energy into electrical energy.
  8. Define Alternating Current
    n electric current that changes direction at regular intervals.
  9. Define Transformer
    increases or decreases the voltage of an alternating current.
  10. Visit this site:
    Did you visit it?
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Science 8 Chap.18
2012-03-22 02:16:36
electromagnetism science chapter 18

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