phon- photo- tele-

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