Science Crossword

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Across
  1. 6. - Bending of light when it changes medium
  2. 7. - Removal of waste substances from the body
  3. 9. - Addition of oxygen or removal of hydrogen
  4. 11. - Increase in size of an image
  5. 12. - Process of breaking down food into simpler substances
  6. 13. - Process by which organisms obtain food
  7. 14. - Reaction where one element replaces another
Down
  1. 1. - Process by which green plants make food
  2. 2. - Measure of bending of a curved surface
  3. 3. - Process of releasing energy from food
  4. 4. - Process used to remove colour from fabrics
  5. 5. - Slow eating away of metals by air and moisture
  6. 6. - Bouncing back of light from a surface
  7. 8. - Removal of oxygen or addition of hydrogen
  8. 10. - Splitting of white light into seven colours