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January 28

January 28. Ch. 8 Schoology Quiz is closed. Ch. 16 Schoology Quiz is now up and running. You have until Friday to complete it. Today: History of Energy Useage HW: PVCL both Chapters 12 and 13. Use P.E.A.R. to answer the following question:.

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January 28

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  1. January 28 • Ch. 8 Schoology Quiz is closed. • Ch. 16 Schoology Quiz is now up and running. You have until Friday to complete it. • Today: History of Energy Useage • HW: PVCL both Chapters 12 and 13

  2. Use P.E.A.R. to answer the following question: How have energy demands have changed in the last 250 years?

  3. The History of Energy and our Current situation

  4. First Law of Thermodynamics • First Law: Energy cannot be created or destroyed. • Energy Flows through Systems Sun  Plants  geologic forces  coal  human effort  power plant  electricity  toaster  toast  you  heat, walking around, talking, thinking, etc. • Energy can change form Nuclear light chemicalmechanicalchemical mechanical heatmechanical electrical heatchemical heat, mechanical, sound, chemical, etc.

  5. Second Law of Thermodynamics • When energy is converted from one form to another, a less useful form results (a decrease in energy quality). • Energy cannot be recycled to a higher quality. • Only 20% of the energy in gasoline is converted to mechanical energy. The rest is lost as heat (low quality energy) • Heat is the by-product of most energy conversions

  6. Energy Needs • Energy demands are continually increasing • All societies on Earth want better standards of living • Requires Energy • Diverse sources of energy can meet these increasing demands

  7. Historical U.S. Energy Consumption

  8. 1964 Prediction of Oil Production

  9. Energy and International Politics • As of the mid-1960s, the U.S. was no longer self-sufficient in energy and begins to import oil. • This generates instability in the U.S. economy with numerous "oil crises" • 1973: OPEC embargo in response to western support of Israel • 1979: Iranian Revolution • 1990: First Gulf War • 2000-2001: Deregulation of California energy industry leads to corporate corruption • 2006-2008: Political instability in Venezuela, Iran, and Iraq; increased demand by India and China

  10. Oil Crises & the Economy • A 5% decrease in Imported Oil will cause an Energy/Oil Crisis. • All Oil Crises have resulted in high rates of inflation followed by recessions • In 1998, the U.S. began to import more oil than what it produced domestically. • According to the EIA, the current recession is the result of 2 factors: • 2006-2008 Oil shortage • Sub-prime mortgage crisis

  11. Present Global Energy Use

  12. Worldwide Energy Supply (tW)

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