Book N Ch 2 Chapter Test

23 Questions | Total Attempts: 207

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Book N Ch 2 Chapter Test

Read each question carefully and choose the correct answer.


Questions and Answers
  • 1. 
    Group of atoms with aligned magnetic poles.
    • A. 

      Motor

    • B. 

      Electromagnet

    • C. 

      Magnetic domain

    • D. 

      Aurora

  • 2. 
    Device that converts electric energy into kinetic energy
    • A. 

      Transformer

    • B. 

      Motor

    • C. 

      Generator

    • D. 

      Electromagnet

  • 3. 
    Current-carrying wire wrapped around an iron core
    • A. 

      Aurora

    • B. 

      Electromagnet

    • C. 

      Motor

    • D. 

      Alternating

  • 4. 
    LIght emitted in a display sometimes called the "Northern Lights"
    • A. 

      Magnetic field

    • B. 

      Generator

    • C. 

      Magnetic domain

    • D. 

      Aurora

  • 5. 
    Uses magnetism to produce electric power
    • A. 

      Generator

    • B. 

      Motor

    • C. 

      Transformer

    • D. 

      Magnetic domain

  • 6. 
    Changes the voltage of an alternating current
    • A. 

      Electromagnet

    • B. 

      Generator

    • C. 

      Tranformer

    • D. 

      Magnetosphere

  • 7. 
    Area around a magnet where magnetic forces act
    • A. 

      Magnetic field

    • B. 

      Electromagnet

    • C. 

      Magnetosphere

    • D. 

      Magnetic domain

  • 8. 
    Current that changes direction
    • A. 

      Direct current

    • B. 

      Alternating current

    • C. 

      Motor

    • D. 

      Electromagnet

  • 9. 
    Earth's magnetic field
    • A. 

      Magnetosphere

    • B. 

      Electrosphere

    • C. 

      Hydrosphere

    • D. 

      Aurora

  • 10. 
    Moving a magnet in and out of a coil of wire produces a(n)
    • A. 

      Increase in voltage

    • B. 

      Stronger magnetic filed

    • C. 

      Electric current

    • D. 

      Electromagnet

  • 11. 
    If both coils of a transformer have the same number of turns, the output voltage will be ___ compared to the input voltage.
    • A. 

      Stepped up

    • B. 

      Stepped down

    • C. 

      The same

    • D. 

      Cancelled

  • 12. 
    The aurora are produced when Earth's magnetic field interacts with ___
    • A. 

      The Van Allen belt

    • B. 

      Electrically charged particles

    • C. 

      The Sun's magnetic field

    • D. 

      The biosphere

  • 13. 
    The Sun emits ___ that stream through the solar system.
    • A. 

      Earth's magnetosphere

    • B. 

      Auroras

    • C. 

      A biosphere

    • D. 

      charged particles

  • 14. 
    The core of an electromagnets is usually made of
    • A. 

      Glass

    • B. 

      Copper

    • C. 

      Iron

    • D. 

      Aluminum

  • 15. 
    A magnetic field exists around a wire whenever
    • A. 

      The wire is coiled

    • B. 

      The wire is wrapped around an iron nail

    • C. 

      A magnet attracts a wire

    • D. 

      Current flows through a wire

  • 16. 
    The domains in an unmagnetized material that can be magnetized are aligned
    • A. 

      In all directions

    • B. 

      North to south

    • C. 

      In only one direction

    • D. 

      In opposite directions

  • 17. 
    Magnetic force is exerted through
    • A. 

      The north poles only

    • B. 

      The south poles only

    • C. 

      A magnetic field

    • D. 

      An aurora

  • 18. 
    An electric current that flows back and forth in a circuit is a(n)
    • A. 

      Direct current

    • B. 

      Alternating current

    • C. 

      Induced current

    • D. 

      Transformed current

  • 19. 
    A moving electric charge creates
    • A. 

      A magnetic field

    • B. 

      Solar radiation

    • C. 

      Neutrons

    • D. 

      Static electricity

  • 20. 
    In a bar magnet, the lines of force are strongest
    • A. 

      In the center

    • B. 

      At the poles

    • C. 

      On the sides

  • 21. 
    Place a checkmark on all of the ways an electromagnet can be increased in strength. 
    • A. 

      Increase the current

    • B. 

      Decrease the number of coild

    • C. 

      Increase the number of coils

    • D. 

      Use a larger battery

    • E. 

      Use a smaller battery

    • F. 

      Use a larger core

  • 22. 
    Electricity flowing through a coil of wire produces
    • A. 

      A magnetic field

    • B. 

      An alternating current

    • C. 

      A compass

  • 23. 
    A doorbell works because it contains a(n)
    • A. 

      Electric motor

    • B. 

      Electromagnet

    • C. 

      Transformer

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