Unit 3 Review (Earth's Resources)

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Across
  1. 2. Does not require oxygen for growth.
  2. 8. The energy released by a fission or fusion reaction. (2 words)
  3. 13. Any natural resource that is used by humans such as water, petroleum, minerals, forests, and animals (2 words)
  4. 14. A natural resource that can be replaced at the same rate at which the resource is consumed. (2 words)
  5. 16. Formed by partially decayed swamp plants that sink to the swamp floor.
  6. 17. Requires oxygen for growth.
  7. 18. A resource that forms at a rate that is much slower than the rate at which the resource is consumed. (2 words)
  8. 20. Formed when peat is exposed to increased temperature and pressure under sediment.
  9. 21. A nonrenewable energy resource formed from the remains of organisms that lived long ago. (2 words)
  10. 22. A mixture of gases that surround a planet moon or space object.
  11. 23. Product of photosynthesis.
  12. 24. A solid hydrocarbon compound that is most widely used for generating electrical power.
  13. 25. Coal formed when lignite is exposed to increased temperature and pressure under sediment.
  14. 26. Process of converting CO2, water into oxygen and sugar using solar energy.
  15. 28. Formed when bituminous coal is exposed to increased temperature and pressure under sediment.
Down
  1. 1. The process by which a nucleus splits into two or more fragments and releases neutrons and energy. (2 words)
  2. 3. A natural resource that humans use to generate energy. (2 words)
  3. 4. A compound made of hydrogen and carbon.
  4. 5. Contains ozone gas and other gases. (2 words)
  5. 6. A rock with pores. (2 words)
  6. 7. The wise use of and preservation of natural resources.
  7. 9. A mixture of gaseous hydrocarbons. (2 words)
  8. 10. The careful and responsible management of a resource.
  9. 11. The warming of the surface and lower atmosphere of Earth that occurs when water vapor, carbon dioxide, and other gases absorb and reradiate thermal energy. (2 words)
  10. 12. A type of solar radiation that is harmful to life on earth. (2 words)
  11. 15. The process of separating crude oil into different products such as gasoline, kerosene, and diesel fuel.
  12. 17. An imaginary line about which a body rotates.
  13. 19. An organism that can live in extreme environments.
  14. 27. A liquid mixture of complex hydrocarbon compounds.