ESR 172 #2

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austinwilson123
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6228
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ESR 172 #2
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2010-02-06 22:57:54
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ESR 172 #2
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ESR 172 #2
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  1. Fossil fuels are forms of stored energy
    Photosynthesis converts solar energy into chemical energy in organic compounds
  2. Three major fossil fuels
    Coal, oil, natural gas- 90% of energy consumed on worldwide basis
  3. Peak Oil
    The time when half of the worlds oil has been exploited: 2020-2050
  4. Hard path
    Fossil fuels, power plants (bad)
  5. Soft path
    Natural resources (good)
  6. R-value
    Measurement of insulation- the higher the R-value, the greater the insulation
  7. Fossil fuels
    Forms of stored solar energy
  8. How photosynthesis and fossil fuels are related
    Photosynthesis converts solar energy into chemical energy in organic compounds such as glucose
  9. What fossil fuel is considered a transition fuel?
    • Natural gas
    • -Considered a clean fuel
    • -Produces fewer pollutants than burning coal or oil
    • -Fewer environmental problems
  10. Oil Shale
    Fine-grained sedimentary rock containing organic matter (kerogen)
  11. Tar Sands
    Sedimentary rocks or sands impregnated with tar oil
  12. Coal
    Partially decomposed vegetation (peat) buried in sedimentary environment (swamp)- compressed into coal
  13. Natural Gas
    Mostly Methane- Organic materials (mostly plants) buried with marine or lake sediments in depositional basins
  14. Crude Oil
    Organic materials (mostly plants) buried with marine or lake sediments in depositional basins
  15. Acid mine drainage
    drainage of acid from coal mine sites- acid pollutes water (evaporates and comes back down as acid rain)
  16. pH scale
    Measure of how acidic or basic- represents the concentration of hydrogen ions in a solution
  17. Synfuels
    Liquid or gaseous fuels derived from solid fossil fuels (coal, oil shale, etc.)
  18. Solar energy
    energy from the sun converted into thermal or chemical energy
  19. Geothermal Energy
    Extracted from heat stored in the earth- steam beds
  20. Wind Energy
    Wind turns turbines which produce energy
  21. Hydropower Energy
    Dam a river- water flow turns turbines- creates energy
  22. Fuel Cell Energy
    Produce electricity by combining fuel hydrogen (H2) and oxygen (O2)
  23. Biomass Energy
    Energy recovered from biomass—organic matter, such as plant material and animal waste
  24. Passive solar energy systems
    Do not require mechanical power
  25. Active solar energy systems
    Require mechanical power to circulate air, water or other fluids
  26. Photovoltaic Technology
    Converts sunlight directly into electricity- generates solar energy
  27. Chemical reaction of Electrolysis
    Use electric current to separate hydrogen (H2) from water (H2O)
  28. Byproducts of hydrogen combustion
    Electricity, water and heat

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