The Radio Waves Quiz: How Much You Know?

19 Questions | Total Attempts: 17

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The Radio Waves Quiz: How Much You Know?

How much do you know about the radio waves? Waves are types of electromagnetic radiation, and they have the longest wavelength in the electromagnetic spectrum. A radio wave is created when an electric field and magnetic field join. Do you know how to switch in between signals? This quiz is a perfect way to get some new information on these types of waves and how they behave under different circumstances. Do give it a shot!


Questions and Answers
  • 1. 
    Which of the following uses radio waves to transmit information?
    • A. 

      Garage door opener

    • B. 

      Cell Phone

    • C. 

      Cordless Phone

    • D. 

      Wireless internet

    • E. 

      All of the above

  • 2. 
    What do you need to transmit a simple signal to an AM radio?
    • A. 

      AM radio

    • B. 

      Orange and a Wire

    • C. 

      9V battery and an orange

    • D. 

      9V battery and a nickle

    • E. 

      None of the above will transmit a signal to an AM radio

  • 3. 
    If you make a slightly more elaborate transmitter with a 9V battery, file, and wire.  What is information is being received on the radio?
    • A. 

      Electricity flowing through the wire.

    • B. 

      The spark jumping from the wire to the file.

    • C. 

      Electricity flowing through the rough file.

    • D. 

      The battery charging.

    • E. 

      None of the above.

  • 4. 
    What were transmitters called in the early days of the radio?
    • A. 

      Transmits

    • B. 

      Senders

    • C. 

      Sparkers

    • D. 

      Spark Coils

    • E. 

      Transistors

  • 5. 
    What voltages did the spark coils have?
    • A. 

      20 kV

    • B. 

      20 V

    • C. 

      20,000mV

    • D. 

      20mV

    • E. 

      None of the Above

  • 6. 
    A transmitter with high voltage ( 20,000V ) is _______________________ because it __________________ the entire _____________ spectrum.
  • 7. 
    Why were high voltages transmitters legal in "early days"?
    • A. 

      There were not many uses for radio waves or people using them.

    • B. 

      The radios could not receive any other types of messages.

    • C. 

      They were illegal.

    • D. 

      They had better rules back in the day.

    • E. 

      None of the above

  • 8. 
    Rather than using static, all radio transmitters today use continuous _____________  ________________ to transmit information.
  • 9. 
    What type of information can a transmitter send with invisible sine waves?
    • A. 

      Audio

    • B. 

      Video

    • C. 

      Data

    • D. 

      All of the above

    • E. 

      None of the above

  • 10. 
    How can hundreds of different devices that use radio waves not interfere with each other?
    • A. 

      Different devices that use radio waves must be used in different locations.

    • B. 

      Each device has a different sine wave frequency.

    • C. 

      They do interfere with each other.

    • D. 

      Radio waves are not real because you cant see them

    • E. 

      None of the above

  • 11. 
    The two parts that any radio has is a _________________ and _________________.
  • 12. 
    The transmitter takes some sort of message (audio, video, or data), encodes it to a ____________    _________________ and transmits it with ____________  ______________.
  • 13. 
    The receiver receives the ____________  ____________ and _____________   the message from the sine wave it receives. 
  • 14. 
    Both the transmitter and receiver use _______________ to radiate and capture the radio signal.
  • 15. 
    AM stands for ___________________   ______________________.
  • 16. 
    FM stands for ____________________ ____________________.
  • 17. 
    What is the frequency of a sine wave?
    • A. 

      How often a message is sent.

    • B. 

      How often the radio transmitter is turned on.

    • C. 

      The number of times it oscillates up and down per second.

    • D. 

      The number of times it oscillates right and left per second.

    • E. 

      None of the above

  • 18. 
    In AM or Amplitude Modulation, the amplitude of the sine wave or the  ________ to _________ voltage, changes.
  • 19. 
    FCC stands for ___________________  ______________________  __________________ in regard to radios.