Nonrenewable energy

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Across
  1. 1. A relatively clean fossil fuel
  2. 5. a black or dark brown coal that contains bitumen, also known as asphalt
  3. 7. Something fossil fuels are not
  4. 9. A brown coal that is a soft sedimentary rock that sometimes shows traces of plant structure
  5. 10. Fossil fuels cause ______ risks and enviornmental damage
  6. 12. A precursor to coal, made up of partly decomposed organic material, including mosses
  7. 13. Fossil fuels are ___________ meaning they are easy to find and use
  8. 14. a radioactive element used as fuel in nuclear power plants (element: U)
  9. 16. Fuels derived from biological material that became fossilized millions of years ago
  10. 18. the contamination in the air from things such as burning fossil fuels
  11. 20. a liquid fossil fuel
  12. 22. Nuclear energy can emit ___________ waste that is dangerous for hundreds of thousands of years
  13. 23. Mining/extracting processes can contaminate _____ sources such as rivers, and lakes by runoff, or erosion
  14. 26. An energy source with a finite supply, primarily fossil fuels and nuclear fuels
  15. 27. A resource that is limited in supply and can be depleted
  16. 28. Old carbon contained in fossil fuels
Down
  1. 2. the law that states energy is not lost, it is rather converted into a different form
  2. 3. A mixture of hydrocarbons such as oil, gasoline, kerosene as well as water and sulfur that exists in a liquid state underground, and when brought to the surface
  3. 4. The chemical reaction between any fossil fuel and oxygen resulting in the production of carbon dioxide, water, and the release of energy
  4. 6. Also known as hard coal, it has the highest quantity of energy per volume of coal and the fewest impurities
  5. 8. Carbon in biomass that was recently in the atmosphere
  6. 11. Short for hydraulic fracturing, a method of oil and gas extraction that uses high-pressure fluids to force open existing cracks in rocks deep underground
  7. 15. Fossil fuels are a contribution to ________________
  8. 17. a solid, combustible fossil fuel
  9. 19. Chemical form of this is: CH4
  10. 21. A common greenhouse gas produced from burning fossil fuels
  11. 24. Gases that trap heat in the atmosphere, contributing to climate change
  12. 25. slow flowing, viscous deposits of bitumen or asphalt, mixed with sand, water, and clay; also known as oil sands