Across
- 2. what all matter is made up of
- 4. Ages period of time when scientific progress slowed
- 6. Student of Leucippus
- 9. scientist who believed everything was made of air
- 13. Ancient Egyptian physician
- 16. invention by Chinese people for navigation
- 17. the father of life sciences
- 20. theory that all life began in the sea and changed over time
- 21. a plant that has seeds that help relieve pain
- 22. Greek Scientist who studied the sky
Down
- 1. what you learned in an experiment
- 3. what Democritus compared atoms to
- 5. what happened when you did an experiment
- 7. scientist who tried to explain origina of humans without a Creator
- 8. a chemical in moldy bread that kills germs
- 10. where the first science records were found
- 11. when observations and facts are used to make general laws about our world
- 12. Greek scientist and mathematician
- 14. Ptolemy thought this was the center of the universe
- 15. scientist who studied the heavens
- 18. what you think will happen in an experiment
- 19. Ancient form of paper