Vocab

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Across
  1. 2. A unique 3-signal combination of dots and dashes codes for each letter of the alphabet and numbers 0 through 9
  2. 3. The science of light properties and behavior
  3. 6. The region were light is obstructed or blocked
  4. 7. Wave signals that are not generated from digital information
  5. 8. Matter that does not allow light to pass through
  6. 9. Used to transmit radio and television programs
  7. 10. Matter that allows some light to pass through
  8. 12. Wave signals generated electronically from digital information
Down
  1. 1. Used to transmit information between cellphones or between an internet router and a computer
  2. 4. Matter that allows light to pass through
  3. 5. A wave with a specific pattern that carries information
  4. 11. Used to transmit information from a remote control to a television