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