Across
- 6. A wave with a specific pattern that carries information
- 7. Matter that does not allow light to pass through
- 8. The region where light is blocked or obstructed.
Down
- 1. signal Wave signals that are not generated from digital information
- 2. code A unique 3-signal combination of dots and dashes codes for each letter of the alphabet and numbers 0-9
- 3. signal Wave signal generated electrically from digital information
- 4. Matter that allows some light to pass through
- 5. Waves Used to transmit television and radio programs