stef and sophie's heat and light crossword\

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Across
  1. 2. lens that bulges outwards
  2. 3. instrument used to measure temperature
  3. 4. heat transfer through a liquid or a gas
  4. 5. light is a form of energy called......radiation
  5. 10. what light does when it hits a mirror
  6. 11. heat transfer can occur through a vaccum
  7. 12. the part of the eye on which an image forms
  8. 13. an object that releases or emits light is
  9. 14. lens that curves inwardss
  10. 16. rays of light do cross when forming this type of image
Down
  1. 1. a measure of how easily light passes thrrough a materal is called its....index
  2. 3. at greater angles of incidence than this, light is totally internally reflected
  3. 6. energy that enables us to see
  4. 7. substance that allows heat to flow
  5. 8. a transparent piece of plaastic or glass that is shaped to curve outwards or inwards
  6. 9. bending of light
  7. 15. rays of light do not cross when producing this type of image