Energy Resources

1. Energy Resources

2. Non-Renewable Energy • Coal • Natural Gas • Oil • Nuclear

3. Renewable Energy Sources • Solar • Wind • Geothermal • Hydroelectric • Tidal • Biomass

4. Fossil Fuels Pros Cons contributes to climate change (builds up carbon dioxide in atmosphere) unsustainable (depletion of stock over time) will become difficult to extract ( becomes dangerous as they go further into the sea or deeper into the ground) oil spillages and pipelines burst damage ecosystems ( expensive to clear up) mines clear up habitat from surface coal not easily transported over long distance • cheap • plentiful • technology exists • oil can be transported over long distances by pipeline

5. Nuclear Energy Pros Cons nuclear waste is VERY dangerous, remains for thousands of years with no solution found yet the more power plants, the higher risks of having a disastrous failure somewhere in the world uranium is the energy source which is scarce and a non-renewable source with a estimated time of 30-60years left before depletion (depending on demand) time to plan/build a nuclear plant is 20-30 years • does not emit carbon dioxide • technology is available • vast amounts of electrical energy produced by a single power plant • very efficient ( 1kg uranium contains 20000 times more energy than 1kg of coal

6. Hydroelectric Power Pros Cons vast areas may be flooded, which causes loss of homes, farmlands and displacement of people expensive erosion rates increase might silt up area and become unusable • blocked lake can be used for leisure, irrigation and electricity generation • once built they are cheap to run

7. Tidal Power Pros Cons expensive might be harmful to wildlife needs good tidal range • Will not run out • No pollution

8. Solar Energy Pros Cons expensive useless in winter in northern countries Only works when the sun is out • solar energy with insulation is cheaper than fossil fuel energy when heating homes

9. Wind Power Pros Cons no wind = no energy placement is critical, needs constant wind Can kill wildlife • Small ecological footprint • No pollutants

10. Biofuel Pros Cons produces emissions requires large areas of land to plant biofuel crop pushes up food prices locals do not get enough food may destroy surrounding ecosystems to grow on

11. Energy from Waste Pros Cons global warming gases released into atmosphere • available • does not deplete natural gas • useful way of getting rid of waste

12. Geothermal Energy Pros Cons Needs to be buried deep under the ground our under water Expensive • No pollution

13. MEDCs have higher energy demands than LEDCs, as they depend on energy for many things such as transport, heating, air-conditioning, cooking and all other aspects of their lives. The choice of what energy source should be used is different from country to country. Some have large oil, coal and gas reserves and that makes fossil fuels an obvious choice for an energy source. However generation of energy also depends on its availability, economy, cultural, environmental and technological factors. When an energy resource is available and close, it is more easier and efficient to use.

14. Culture fears based on the fear of nuclear accidents and waste, have made it quite unpopular to choose. • Cultural and tradition means that non-renewable resources are favored, and the places with renewable energy resources are limited. • Renewable energy sources are not being used much globally which means that it is still not ready to meet current demands. • Renewable sources can be used more if the production prices of the non-renewable sources are increased. This may better the environment as higher costs of the fossil furls means that peoples view will change. • Peoples interest in renewable resources has led to an increased demand for renewable and non-pollution sources. This leads to greater investments and research into more alternatives or improvements.