CROSSWORD

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Across
  1. 5. AC to DC converter
  2. 9. The study of heredity and variation in organism
  3. 11. It's the principle behind batteries and rusting
  4. 12. Most abundant gas in the air
  5. 13. Medical radiation used to treat tumors
  6. 14. Internal friction within a fluid
Down
  1. 1. Source of nuclear fuel
  2. 2. Deformation of a material under stress
  3. 3. A solution with a low pH
  4. 4. A C1 alkane
  5. 6. Largest planet in the solar system
  6. 7. The scientific study of the origin,evolution and ultimate fate of the universe
  7. 8. Scientist who discovered the dispersion of light
  8. 10. Subatomic particle with a neutral charge
  9. 15. Found in iodized salt