Non renwables final

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Author:
anime1003
ID:
219412
Filename:
Non renwables final
Updated:
2013-05-13 14:09:13
Tags:
final exam
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Description:
soil, water, air
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  1. OABC
    • Organic
    • Leaching
    • accumulating
    • partially decomposed (May contain rocks)
  2. soil formation control
    • climate
    • topography
    • biology
    • precursor material
    • time
  3. productivity
    capacity of fertile soil
  4. most common mineral on earth
    feldspar
  5. feldspar reacts with _____
    free hydrogen ions
  6. mechanical weathering
    breakdown of material into smaller pieces without change of chemical composition
  7. 4 forms of mechanical weathering
    • cold, arid, high relief
    • thermal expansion/contraction
    • frost action
    • organic
  8. Chemical breakdown of rocks
    • oxidation
    • dissolution
    • hydrolysis
  9. Hydrolysis
    • igneous is most common by volume
    • feldspar is most common mineral rock
  10. Green revolution
    • after WWII
    • better land management
    • widespread irrigation
    • selective breeding
    • intense fertilization
  11. Synthetic fertalizer
    • Nitrogen: produce ammonia from methane then convert to ammonium nitrate or Urea
    • Potassium: mine potash and separate KCl
    • Phosphorous: dissolved in acid, released poop
  12. Properties of metals
    • opaq
    • durable
    • ductile
    • malleable
    • fusible
    • high thermal conductivity
    • high electrical conductivity
  13. Aluminium
    not found in native state
  14. Ore
    economic deposit of metal minerals
  15. Grade
    • concentration of the metal
    • grain size and texture
    • size of deposit
    • depth below surface
    • location
    • by-products
  16. Aluminium properties
    • easily formed machine, cast
    • ver light: 1/3 weight of steel
    • resistant to corrosion
    • cunductor of electricity
    • non-magnetic
    • non-toxic and impervious
    • high thermal conductivity
  17. two proccesses of making aluminium
    • bayer process (1889)
    • Hall-heroult process (1886)
  18. Bayer process (chemical)
    Bauxite-> alumina
  19. Hall-heroult process (electrolysis)
    Alumia-> aluminum
  20. formation of Bauxite
    • deep weathering of aluminum rich rocks
    • low temp
    • surface metamorphism
    • thick soil
    • leached of silica
    • abundant rain
    • great subsurface drainage
    • low topography
  21. Iron has ____oxidation states
    two (Hemitite and Magnitite)
  22. Ferric vs Ferrous
    • soluble in reducing environment
    • insoluble in the presence of oxygen
  23. 3 types of sedimentary iron deposits
    • Bog iron
    • iron stone
    • Banded Iron formation
  24. BIF's
    • Banded iron formation
    • could not be formed today (too much oxygen)
  25. Natural enrichment of BIF
    • oxygen rich groundwater percolates through iron deposit
    • leaches out silica
    • concentrates iron by 65%
    • reduces volume of original BIF
  26. Proccessing of iron
    • mine
    • crush
    • grind w/ water
    • bake in kiln (using coke)
  27. timescale
    natural recycling time
  28. residence time
    representative timescale for a parcel of groundwater in resivoir
  29. hydrophere
    20-30 km thick
  30. radius of earth
    6400 km
  31. world reservoirs of water (most to least)
    • ocean
    • icecaps/glaciers
    • groundwater
    • freshwater lakes
    • saline lakes
    • vadose water
    • atmosphere
  32. ____ is bigger over the ocean
    evaporation
  33. ____ is bigger over land
    Precipitation
  34. PET
    potential evapotransporation
  35. Dryland: PET__P
    PET>P

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