Mrs. Alston's crossword- by Jimmy Miller and Sam Lucas

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Across
  1. 3. Energy that enables us to see
  2. 4. Instrument used to measure temperature
  3. 7. Heat transfer through a liquid or a gas
  4. 9. An object that releases or emits light is
  5. 10. A measure of how easily light passes through a material is called.... index
  6. 11. Rays of light do not cross when producing this type of image
  7. 13. Heat transfer can occur through a vacuum
  8. 14. The part of the eye on which an image forms
Down
  1. 1. Lens that curves inwards
  2. 2. Light is a form of energy called ............... radiation
  3. 5. What light does when it hits a mirror
  4. 6. Rays of light do cross when forming this type of image
  5. 8. Substance that allows heat to flow
  6. 10. Bending of light
  7. 12. Lens that bulges outwards