Across
- 5. a form of energy resulting from the existence of charged particles
- 8. a prehistoric plant or animal embedded in rock
- 9. scientific procedure is undertaken to make a discovery
- 11. smallest structural and functional unit of an organism
- 13. the planet we live on
- 17. proved to be true
- 18. basic units of matter
- 19. high temperature
- 20. the angular distance of a place north or south of the earth's equator
Down
- 1. O², a chemical needed to breathe
- 2. a systematically organized body of knowledge on a particular subject.
- 3. results of motion
- 4. gases around the world
- 6. weather conditions
- 7. the study of the earth
- 10. an essential characteristic
- 12. distinct compound or substance
- 14. a scientific guess
- 15. action or process of moving
- 16. Facts and statistics collected