phon- photo- tele-

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