CROSSWORD TIME

1234567
Across
  1. 2. can see clearly through an object
  2. 5. you see your reflection in
  3. 7. objects that emit light
Down
  1. 1. dark space behind an opaque object where light cannot reach
  2. 3. objects that do not emit light
  3. 4. can see through an object, but not clearly
  4. 6. cannot see through an object