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Energy Resources

Energy Resources

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  • 1. 4.1 Energy and Mineral Resources  Renewable resources can be replenished over fairly short spans of time, such as months, years, or decades.  Nonrenewable resources take millions of years to form and accumulate. Renewable and Nonrenewable Resources
  • 2. 4.1 Energy and Mineral Resources  Fossil fuels are hydrocarbons that may be used as fuel, including coal, oil, and natural gas. Fossil Fuels (nonrenewable)
  • 3. 4.1 Energy and Mineral Resources
    •  Coal forms when heat and pressure transform plant material over millions of years.
    • Large coal deposits in US
    • Mining scars land and is dangerous
    • Burning causes air pollution – sulfur results in acid rain – CO2 a greenhouse gas
    Fossil Fuels
  • 4. 4.1 Energy and Mineral Resources
    •  Petroleum (oil) and Natural Gas forms from plants and animals buried in ancient seas.(deposits are found on both land and under oceans)
    • Large deposits globally including US
    Fossil Fuels
  • 5. 4.1 Energy and Mineral Resources Fossil Fuels
  • 6. 4.1 Energy and Mineral Resources
    • Petroleum (oil) and Natural Gas
    • Drilling can damage environment especially from tar sands and shale which requires large amounts of water
    • Burning releases CO2
    Fossil Fuels
  • 7. Anticlines Are Common Oil Traps
  • 8. 4.2 Alternate Energy Sources  In nuclear fission, (not fusion) the nuclei of heavy atoms such as uranium-235 are bombarded with neutrons.  The uranium nuclei split into smaller nuclei and emit neutrons and heat energy. Alternative Energy Resources Nuclear Energy (nonrenewable)
  • 9. Diablo Canyon Nuclear Plant
  • 10. 4.2 Alternate Energy Sources  Concerns remain about the use of nuclear energy safety. Accidents have occurred; radioactive material is dangerous and transport and disposal of material problematic. However it is mainly a nonpolluting method of generating electricity. Nuclear Energy (nonrenewable)
  • 11. 4.2 Alternate Energy Sources 1. Solar energy’s “fuel” is free.  Solar energy has two advantages: 2. Solar energy is non-polluting.  Solar energy has some disadvantages: Solar Energy (renewable)
  • 12. 4.2 Alternate Energy Sources  In the next 50 to 60 years, wind power could meet between 5 to 10 percent of the country’s demand for electricity. Wind Energy (renewable)
  • 13. Wind Turbines
  • 14. 4.2 Alternate Energy Sources  The strong water flow that results drives turbines and electric generators.  The water held in a reservoir behind a dam is a form of stored energy that can be released through the dam to produce electric power.  Hydroelectric power is the power generated by falling water. Hydroelectric Power
  • 15. Glen Canyon Dam
  • 16. 4.2 Alternate Energy Sources  Hot water is used directly for heating and to turn turbines that generate electric power.  Geothermal energy is harnessed by tapping natural underground reservoirs of steam and hot water. Geothermal Energy
  • 17. The Geysers Is the World’s Largest Electrical Geothermal Facility
  • 18. 4.2 Alternate Energy Sources  Tidal power is harnessed by constructing a dam across the mouth of a bay or an estuary in coastal areas.  The strong in-and-out flow of tidal water drives turbines and electric generators. Tidal Power
  • 19. Tidal Dams
  • 20. 4.2 Historical Use of Energy
  • 21. 4.2 Electrification of America  1750-1850 Industrial revolution (steam power, coal mining, iron, gas lights, cotton spinning)  1930-1950 Rural electrification of America.  Early 1900’s to about 1930 cities “wired” for electricity .  1879 Edison invents the light bulb.  1888 Tesla joins Westinghouse develops AC motor and power transmission system Timeline
  • 22. 4.2 Historical Use of Energy
  • 23. 4.2 Automobiles in America  1930 many people rode horses and use mass transit by 1950 most middle class owned a car .  1903 Ford Motor Company incorporated.  1928 campaign slogan “A chicken in every pot and a car in every garage”.
  • 24. 4.2 Historical Use of Energy
  • 25. 4.2 World Population
    • 1804 --- 1 Billion
    • 1927 --- 2 Billion
    • 1961 --- 3 Billion
    • 1974 --- 4 Billion
    • 1987 --- 5 Billion
    • 1999 --- 6 Billion
  • 26. 4.2 Florida Sources of Energy
  • 27. 4.2 Florida Energy  FL has only minor gas/oil reserves  Solar, nuclear, biomass and wind options .  FL energy consumption among highest states in country (residential/transportation highest, industry low)  Possible large oil deposits off west coast  Ethanol from citrus peel waste?
  • 28. Saving Energy