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Chapter 11 Resources and Energy

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					     Chapter 11
Resources and Energy

        Section 1
    Mineral Resources
       Notes 11-1
              Mineral Resources

   Nonrenewable resources: supply is limited
    and can not be replaced once used
       Minerals
       Coal
       Oil
       Natural gas
       Metals (Au, Ag, Al)
       Nonmetals (S, SiO2)
             Mineral Resources

   Renewable resources: can be replaced
    within a human lifetime or as they are
    used
       Trees
       Other plants
       Hydropower (water)
       Solar power (sun)
       Wind power (wind)
                    Sites

   http://www.nrel.gov/rredc/
               Formation of Ores
   Some metals are found in the earth as
    native elements
       Gold, silver, copper
   Most metals and nonmetals are found
    chemically combined with other minerals
       Ore: deposits of minerals from which metals
        and nonmetals can be removed profitably
          Iron (from magnetite and hematite)
          Mercury (from cinnabar)

          Aluminum (from bauxite)
Copper            Gold




         Silver
                        Ores




Cinnabar (ore of mercury)   Bauxite (ore of aluminum)
              Formation of Ores
   Ores can form a variety of ways
   In magma, metallic minerals sink
       Layers are made which make ore deposits in
        the magma
       Chromium (Cr), Nickel (Ni), Lead (Pb)
   Contact Metamorphism causes hot mineral
    solutions to spread through small cracks in
    the rock making veins
       Minerals are deposited in the veins
       Lode: large number of thick mineral veins
Chromium



           Nickel




Zinc
               Formation of Ores

   Water deposits
       Native minerals are eroded out by moving
        water
       Settle out at weak current spots in a
        river/stream
       Deposits are called placer deposits
          Inside curve of a river/stream
          Pot holes down stream from a water fall
              Formation of Ores

   Water deposits
       Water dissolves minerals as it flows through
        cracks in rocks
       New minerals precipitate out of solution and
        form veins of ore deposits
       Ex: gold, tin, lead, copper and platinum
Galena



      Ore of lead
        Used of Mineral Resources
   See page 197
   Metallic ores can be used for beauty and
    rarity
       Gold, platinum and silver used in jewelry
   Nonmetallic minerals can be used in
    gemstones in jewelry
       Quartz, rubies, sapphires, diamonds
   Other nonmetallic minerals are used in
    building materials
       Calcite and gypsum
               Some Minerals
                             Gold
   Diamonds:
   http://science.howstu
    ffworks.com/diamond.
    htm/printable

                            Platinum
               Mineral Conservation
   Minerals are being consumed at an
    alarming rate.
       One source of mineral resources that has not
        be utilized is the ocean floor
            They are hard to get to and remove
   Conservation of mineral is one way to
    slow down the rate of consumption.
       Recycle things made with nonrenewable
        minerals.
       Use abundant or renewable resources instead
            plastic
  Homework
Sticky Notes Ch. 11
 Key Terms Ch. 11

   Due: Nov. 22

				
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