Science Extra Credit

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