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Energy_and_the_Environment_Presentation.pptx
- 1. Energy and theEnvironment Environmental Science | College Level Detailed Overview
- 2. Intended Learning Outcomes •1. Cite the uses and sources of energy. • 2. Discuss the energy crisis and conservation. • 3. Identify alternative energy sources. • 4. Explain the environmental effects of energy production and utilization.
- 3. Uses and Sourcesof Energy • Two main types: Non-renewable and Renewable energy. • Non-renewable: Limited resources that cannot be replenished in a human lifetime. • Renewable: Naturally replenished and sustainable energy sources. • Human dependence on energy affects economic growth and environmental stability.
- 4. Non-renewable Energy Resources •1. Fossil Fuels – hydrocarbons used as fuel (coal, oil, natural gas). • Formed from remains of ancient plants and animals. • Main sources of industrial and domestic energy. • 2. Nuclear Energy – produced from nuclear fission/fusion. • Emits fewer pollutants but produces radioactive waste. • Safety and disposal remain major concerns.
- 5. Environmental Problems fromFossil Fuels • CO₂ emissions from combustion cause global warming. • Acid deposition due to nitrogen oxides. • Water pollution from spills and transport leaks. • Habitat destruction from surface mining. • Health hazards from air pollution and particulate matter.
- 6. Nuclear Energy: Prosand Cons • Advantages: • Low CO₂ emissions and minimal air pollution. • High energy output per fuel unit. • Disadvantages: • Radioactive waste disposal issues. • Potential for catastrophic accidents. • High construction and maintenance costs.
- 7. Renewable or AlternativeEnergy Sources • 1. Solar Energy – harnesses sunlight directly; free and non- polluting. • 2. Wind Energy – fastest-growing energy source using wind turbines. • 3. Geothermal Energy – derived from Earth's internal heat. • 4. Hydropower – uses falling or flowing water to generate electricity. • 5. Biomass Energy – plant and organic materials used for fuel (e.g., biogas, biodiesel).
- 8. Hydropower and BiomassEnergy • Hydropower: Major source of renewable electricity. • - Dams alter natural river flow and aquatic ecosystems. • Biomass: Renewable source from organic matter. • - Converts agricultural and household waste into fuel. • - Used widely in developing nations (India, China).
- 9. Energy Crisis andConservation • Energy crisis: Occurs when fuel extraction or electricity production cannot meet demand. • Conservation: Reducing energy use without compromising services. • Efficiency: Using technology to reduce energy consumption. • Example: Driving less (conservation) vs. using fuel-efficient cars (efficiency).
- 10. Environmental Effects ofEnergy Use • Oil exploration threatens ecosystems and marine environments. • CO₂ and NOx emissions cause climate change and acid rain. • Surface mining destroys topsoil and biodiversity. • Global energy demand continues to rise, worsening environmental impacts.
- 11. Global Energy ConsumptionTrends • Energy demand is increasing globally, including in the Philippines. • Developed nations like Germany maintain stable energy use through efficiency. • Developing countries face challenges balancing growth with sustainability. • Conservation is key to extending fossil fuel availability.
- 12. Energy Conservation andEfficiency Techniques • At Home: • Use LED lighting and energy-efficient appliances. • Practice waste segregation and recycling. • Reduce unnecessary electricity consumption. • Community and Industry: • Implement renewable energy projects. • Promote carpooling and public transport. • Strengthen environmental laws on energy usage.
- 13. Technology and EnvironmentalImpact • Technological progress increases energy demand. • Examples of degradation: oil drilling, deforestation, mining. • • Solutions: • - Promote clean energy innovation. • - Implement eco-friendly production methods. • - Strengthen global cooperation on energy laws.
- 14. Key Takeaways • Energyis essential for development but affects the environment. • Non-renewable sources are finite; renewable options are vital. • Energy conservation and efficiency are critical for sustainability. • Balancing energy use and environmental protection ensures a livable future.