Sarah's Science, heat and light crossword

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Across
  1. 2. rays of light do cross when producing this type of image (4,5)
  2. 3. Energy that enables us to see
  3. 4. The part of the eye on which an image forms
  4. 5. Lens that bulges outwards
  5. 6. At greater angles of incidence than this, light is totally internally reflected (5,8,10)
  6. 8. Heat transfer through a liquid or a gas
  7. 9. A measure of how easily light passes through a material is called its....index
  8. 11. Lens that curves inwards
  9. 13. Heat transfer can occur through a vacuum
  10. 14. Substance that allows heat to flow
Down
  1. 1. rays of light do not cross (7,5)
  2. 2. bending of light
  3. 3. An object that releases or emits light
  4. 6. Instrument used to measure temperature
  5. 7. Light is a form of energy called...radiation
  6. 10. A transparent piece of plastic or glass that is shaped to curve outwards or inwards
  7. 12. What light does when it hits a mirror