Phon/photo

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Across
  1. 2. takes pictures
  2. 3. when hit, makes a sound.
  3. 4. something to call with
  4. 6. i just want to be part of your
  5. 7. a reaction to a plant when exposed to light
  6. 8. a device for measuring the intensity of light.
Down
  1. 1. you sing into
  2. 2. having electrical effects to exposure to light
  3. 5. always looking good in all photos
  4. 7. the study of light-induced chemical reactions