Wrapping Up Week 3 Understanding Energy Systems Fossil Fuels, Nuclear Power, and Renewable Energy

Energy from Fossil Fuels Energy Sources and Uses Exploiting Crude Oil Other Fossil Fuels Energy Policy and Security □

Fig Global Primary Energy Supply World Total = 496 Quads in 2007

Energy Consumption in the United States 1 Quadrillion is U.S. BTU’s

Oil Production and Consumption in the U.S Barrels/day 1 Barrel = 42 gal. U.S. measure 10 9 Barrels Annually

Consumption, domestic production, and imports of petroleum products

Problems from Foreign Oil Dependency Variations in cost of purchases Threat of supply disruptions Limitations of nonrenewable resource

Other Fossil Fuel Sources Natural gas – 50-year supply in U.S. Coal – 230-year supply in U.S. Oil shales and oil sands - complex extraction technologies □

Annual Carbon (CO 2 ) Emissions Per Capita

Energy from Nuclear Power Nuclear Energy in Perspective How Nuclear Power Works The Hazards and Costs of Nuclear Power More Advanced Reactors The Future of Nuclear Power □

Nuclear Energy in Perspective

The Hazards and Costs of Nuclear Power Facilities Radioactive emissions Radioactive wastes Disposal of radioactive wastes Nuclear power accidents Safety and nuclear power Economic problems with nuclear power □

The Future of Nuclear Power Opposition softening Rebirth of Nuclear Power Endorsement by Greenpeace vs. Coal □

Opposition General distrust of technology Skepticism of management Doubt overall safety claims about nuclear power plants Nuclear power plants are prime targets to terrorist attacks Nuclear waste disposal problems □

Rebirth ? Need to address public concerns listed in the opposition section. Waste dilemma must be resolved. Strong political leadership capable of analyzing the full spectrum of problems associated with the future of nuclear power is needed. □

Renewable Energy Topics Putting Solar Energy to Work Indirect Solar Energy Renewable Energy for Transportation Additional Renewable-Energy Options Policies for a Sustainable-Energy Future □

Putting Solar Energy to Work Principles of solar energy Solar heating of water Solar space heating Solar production of electricity The promise of solar energy □

Disadvantages of Solar Energy Technologies Expense Only works during the day Requires back-up energy sources, e.g., batteries Some climates not sunny enough □

Promise of Solar Energy (More or Less?) The use of solar electrical power will: –create ____ reliance on coal or nuclear power. –lead to significantly _____ acid rain. –produce ____ electrical power for villages in developing countries. □

Indirect Solar Energy Hydropower Wind power Biomass energy □

Wind Energy in the United States Cost

Renewable Energy and Transportation BiofuelsBiofuels: ethanol and biodiesel HydrogenHydrogen: the fuel for the future? □

Additional Renewable Energy Options Geothermal energy Tidal power Ocean thermal-energy conversion (OTEC)

A Clean Energy Blueprint Supply Supply side – Establish a Renewable Portfolio Standard – Maintain production tax credits – Extend net metering – Substantially increase research and development on renewable energy and efficiency

A Clean Energy Blueprint DemandDemand Side –Improve efficiency standards –Enhance building codes –Provide incentives for combined heat and power facilities –Raise fuel economy (CAFÉ) standards –Increase research and development on high-efficiency vehicles (hybrid electric and fuel cell vehicles).

Week 4 Overview For Week 4 we will continue our Environmental Science journey by studying Pollution and Prevention, starting with its impact on human health. Objectives/Learning Outcomes: At the end of this week, you will: Understand Pollution and Prevention - Part A Hazards and Health Pest Control Water Pollution Solid Waste Activities and Assignments: Week 4 Reading (13, 17, 20, 21) Week 4 PowerPoints Week 4 Discussion Board (Hazards and Risks) Week 4 Video Week 4 Quiz Continue Working on Project Test #2 available at end of the week (Saturday of Week 4)