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Across
  1. 1. The source of water cycle- Sun
  2. 3. The liquid part of blood
  3. 7. Chemical used for disinfection of water
  4. 8. The part of flower that becomes fruit after fertilization
  5. 9. Scientist that speeds up the rate of chemical reaction
  6. 11. Planes fly in this layer of atmosphere
  7. 12. The reddish brown layer formed when iron reacts slowly with moisture and oxygen
  8. 13. This planet is also called "Morning Star"
  9. 14. S.I. unit of frequency
Down
  1. 1. The process in which solid directly changes into vapor on heating
  2. 2. Discovered the elements radium and polonium and researched radioactivity.
  3. 4. The unit used to measure electrical current
  4. 5. Message transmitters between brain and other parts of the body
  5. 6. Condition caused by deficiency of iodine
  6. 10. Force that keeps planets around the sun