Across
- 4. Mail that goes faraway
- 7. Using a scope to see things close up
- 8. Light
- 12. Having a conference faraway
- 13. Hearing sound through an earpiece that goes on your head
- 16. A portable telephone
- 17. An image of a person or object
- 18. A TV broadcast
Down
- 1. Study of sounds used in speaking
- 2. Far
- 3. Plants using light as a source of energy
- 5. Using light to copy paper
- 6. Chemistry action of light
- 9. Communicating from far away
- 10. A device for transmitting sound
- 11. A device used to make sound louder
- 14. Sound
- 15. Hearing sound through your ear