Vocabulary

• Carrier wave


  An electromagnetic wave with the specific frequency that a radio station is assigned
• Modulation


  Adding the signal wave to the carrier wave
• Amplitude modulation (AM)


  Varying the amplitude of the carrier wave
• Frequency modulation (FM)


  Varying the frequency of the carrier wave
• Analog signal


  Electric signal whose values change smoothly over time
• Digital signal


  Electric signal with only two possible values: ON and OFF
• Transceiver


  Device that transmits one radio signal and receives another radio signal
• Global Positioning System (GPS)

  System of satellites, ground stations, and receivers that determine exact location on or above Earth's surface