Sending Info Using Wave Pulses

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Across
  1. 2. information
  2. 4. global positioning system; uses radio waves that communicate with satellites
  3. 8. an electronic device that picks up and translates radio waves into sounds
  4. 10. a code of dots and dashes sent long distances as electrical signals through wires
  5. 14. any physical substance that possesses mass and takes up space
  6. 15. the process of sending pictures through electrical waves to be seen on a screen
  7. 17. spoken or written information sent from one person or group to another
  8. 19. a device that uses wires to send voice or other signal over long distances
  9. 20. a cable that contains thin threads made of glass or plastic that transmit infrared light from one end to the other
  10. 21. an elevated structure containing antennas and electronic equipment for sending and receiving radio signals
Down
  1. 1. waves that make up the electromagnetic spectrum
  2. 3. a historical communication device used to transmit electrical signals via wires
  3. 5. light waves with longest wavelength and lowest frequency
  4. 6. waves used in remote controls, and fiber-optic cables
  5. 7. the part of a communications device that detects radio waves and changes them into other types of waves
  6. 9. a system of delivering the mail using riders on horseback
  7. 11. a handheld communication device that uses radio waves to make calls, send texts, and access the internet
  8. 12. the part of a communications device that produces and sends out messages using waves
  9. 13. waves used in cooking food, tracking storms, and television signals
  10. 16. any object that orbits a larger body in space
  11. 18. a technology that allows a group of devices to communicate with each other using radio wave pulses