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Renewable and Nonrenewable Resources Chapter 2

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Renewable and Nonrenewable Resources Chapter 2 Theme Outline Lesson 2.3 Distribution and Management of Natural Resources Pennsylvania Coal Coal and the Environment ... – PowerPoint PPT presentation

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Title: Renewable and Nonrenewable Resources Chapter 2


1
Renewable and Nonrenewable ResourcesChapter 2
2
Theme Outline
  • Lesson 2.3
  • Distribution and Management of Natural Resources
  • Pennsylvania Coal
  • Coal and the Environment
  • Pennsylvania Power Plants
  • Conservation

3
PA Academic Standards for Environment Ecology
  • Standard 4.2.10.C
  • Analyze how man-made systems have impacted the
    management and distribution of natural resources.
  • Explain the complete cycle of a natural resource,
    from extraction to disposal, detailing its uses
    and effects on the environment.
  • Analyze energy uses and energy conservation in
    different regions.
  • Examine conservation practices in different
    countries.
  • Analyze the costs and benefits of different
    man-made systems and how they use renewable and
    nonrenewable natural resources.
  • Analyze the impact of information systems on
    management and distribution of natural resources.

4
Learning Objectives
  • Students will analyze the costs and benefits of
    different types of power plants and how they use
    renewable and nonrenewable natural resources.
  • Students will use Pennsylvania coal to explain
    the complete cycle of a natural resource, how it
    is used, and its effects on the environment.
  • Students will learn about some of the global
    organizations and agencies that work to conserve
    global resources.
  • Students will analyze the impact of information
    systems on management and distribution of natural
    resources.

5
Distribution and Management of Natural Resources
  • Pennsylvania Coal
  • Mining Pennsylvanias Coals
  • Coal and the Environment
  • Pennsylvania Power Plants
  • Coal-burning Power Plants
  • Nuclear Power Plants
  • Hydroelectric Power Plants
  • Conservation

6
Pennsylvania Coal
  • Common mining techniques
  • Room and pillar method
  • Long wall method
  • Surface mining method

7
Room and pillar method
  • Definition mining method in which rooms are cut
    into a coal bed, leaving a series of pillars, or
    columns of coal, to help support the mine roof
    and control the flow of air
  • Rooms are typically 20-30 feet wide
  • Pillars are generally about 100 feet wide.
  • Workers typically remove as much coal as possible
    until the roof falls in.
  • Mines are typically abandoned when the retreat
    process is complete.

8
Room and pillar method
9
Longwall Method
  • Definition procedure in mining in which a
    cutting head moves back and forth across a coal
    seam, causing pieces of coal to fall onto a
    flexible conveyor for removal from the mine
  • Cutting heads move along coal seams, breaking off
    layers of coal and transporting them out of the
    mine using conveyor systems.
  • Special roof supports are moved as the roof is
    cut, to ensure the stability of the mine.

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11
Surface Mining
  • Draglines, bulldozers, and front-end loaders
    remove overburden from the coal seam.
  • Explosions are sometimes used to loosen coal
    formations.
  • Surface mining occurs on level surfaces, follows
    coal seams along hillside, and uses open pits
    where thick coal seams are found.

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14
Acid Mine Drainage (AMD)
  • Definition exposure of pyrite to air and water
    during mining, causing sulfuric acid and iron
    hydroxide to form
  • Pyrite
  • Fools gold
  • Found in large amounts in bituminous coal
  • When exposed to air and water, sulfuric acid and
    iron hydroxide form

15
Why is AMD a concern?
  • Enters freshwater systems and air supplies from
    surface sources and underground sources
  • Lowers pH of freshwater systems
  • Covers river and stream channels with iron
    hydroxide, a yellowish-orange compound

16
So what do we do with mined areas?
  • Mining of any resource, including coal, can
    greatly alter a natural landscape
  • Historically active mines (prior to 1970s)
    operated until all of the economically
    harvestable coal was removed, then mines were
    abandoned.
  • Surface Mining Control and Reclamation Act (1977)

17
Reclamation
  • Definition restoration of mined land to its
    original condition by reconstructing the lands
    topography and replanting vegetation

18
Pennsylvania Power Plants
  • Major types of Power Plants
  • Coal-burning power plants
  • Mainly steam-turbine plants that burn bituminous
    coal to generate heat which turns water into
    steam which spins a series of turbines. PA has
    16.
  • Nuclear power plants
  • Mainly steam-turbine plants that use fission to
    break specific types of uranium generate heat
    which turns water into steam which spins a series
    of turbines. PA currently has 5 in operation.
  • Hydroelectric power plants
  • Mainly turbine plants that use the energy from
    moving water to generate electricity by spinning
    a series of turbines

19
Conservation
  • Definition careful use of a resource so that its
    supply will last longer
  • Best addressed by a series of questions
  • How can humans limit their dependence on
    nonrenewable energy sources?
  • How can humans begin to utilize alternative
    energy strategies as primary energy sources?
  • How can humans economically promote the use of
    renewable energy systems?
  • How can humans increase the efficiency of
    existing materials, and further improve the
    efficiency of future materials?

20
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