Science Extra Credit
Across
- 3. contamination of the environment with waste products or impurities.
- 5. band of the various colors of light
- 9. process by which a scientific procedure is carried out according to certain guidelines
- 10. ecosystem encompassing all life on earth and the physical life that it supports
- 11. effect apparent shift in the wavelengths of energy, such as a soundwave or light wave
- 13. solid earth
- 15. all earth's water
- 17. bang theory theory that all matter and energy in the universe was compreesed
- 18. substance that has a characteristic set of physical and chemical properties
Down
- 1. thick blanket of gases surrounding the earth
- 2. property of an object or phenomenon.
- 4. act of using senses to gather information
- 6. study of the earth's atmosphere
- 7. something being broken down
- 8. in an experiment that can be changed
- 12. method organized, logical approaches to scientific reasearch
- 13. study of origin, history and structure of earth
- 14. study of the universe beyond the earth
- 15. possible explanation of a problem based on fact
- 16. community of organisms in the environment