Science crossword puzzle!

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Across
  1. 4. a Greek scientist, believed air is the most basic material in nature.
  2. 6. Egyptian's used this to create medicine and it worked and cured people
  3. 7. the view of the planets and stars that Ptolemy created.
  4. 8. the very first scientist,from egypt,helped people with medical problems
  5. 10. An ancient form of paper, made from a plant of the same name.
  6. 12. a greek scientist,who thought all materials were like sand.
  7. 13. The systematic study of the natural world through observation and experimentation in order to formulate general laws
  8. 14. a statement describing what you think will happen in an experiment.
  9. 15. greek scientist. studied the sky.
Down
  1. 1. a group of Egyptian's who wrote on clay tablets or on rocks before the Papyrus
  2. 2. a greek scientist,studied the heavens
  3. 3. a Greek scientist, believed to be one of Thales students.
  4. 5. "the father of life sciences"
  5. 7. Egyptian's used this type of seed as a pain reliever
  6. 9. some scientists believed that using spontaneous generation these animals formed from rotting meat.
  7. 11. his face is on the Fields medal, and it reads "rise above oneself and grasp the world."
  8. 16. a greek scientist who proposed that all matter is composed of units called atoms.