Lesson 5 The Increasing Global Demand For Energy


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Lesson 5 The Increasing Global Demand For Energy

  1. 1. The increasing global demand for energy through sustainable and non – sustainable developments
  2. 2. Objectives … <ul><li>To understand the impact of world population growth, increased wealth and technological advances on the global demand for energy. </li></ul><ul><li>To be able to explain the social, economic and environmental impact of increased energy use. </li></ul><ul><li>Textbook page 284 - 286 </li></ul>
  3. 3. Why is there an increase in demand for energy? <ul><li>Increasing world population </li></ul><ul><li>Global pop is c.6.8 billion </li></ul>*population is getting richer More money people have the more consumer goods they can afford 2 of the most rapidly developing countries are China and India with a combined pop of nearly 2.5 billion *advances in technology increase availability of products which …. Needs energy Many items such as light bulbs and washing machines are now being designed to be more energy efficient thus reducing the demand for energy Global energy use is around 220 million barrels of oil (equivalent) per day. Largest consumers are North America and Europe
  4. 4. Our insatiable demands…. <ul><li>As people have got more money they purchase things to make their lives more comfortable or desire to own goods. </li></ul><ul><li>What do you use that consumes electricity that perhaps a great, great grandparent wouldn’t have used in early 20 th C? </li></ul><ul><li>Goods consume energy in their manufacture as well as their usage </li></ul><ul><li>Our increasing personal wealth increases our demand for energy. </li></ul>
  5. 5. Global energy consumption has reached a record high…
  6. 6. Global variations in energy use <ul><li>Energy consumption per head is regarded as a reliable indicator of a country’s level of economic development </li></ul><ul><li>Well developed manufacturing and service sectors, high levels of transport and movements of goods and people for work and leisure have high energy demands. </li></ul><ul><li>In Canada and US consumption per head is double that in Europe and more than 800x that of a developing country </li></ul>
  7. 8. Impacts of increased energy use from fossil fuels Understanding geog pg 223
  8. 9. Producing more energy has lots of impacts <ul><li>Most of energy produced in the world comes from burning fossil fuels </li></ul><ul><li>Renewable sources are used to produce some energy </li></ul><ul><li>Increasing energy production has social, economic and environmental effects </li></ul>
  9. 10. Social impacts <ul><li>More power plants will have to be built to increase energy production </li></ul><ul><li>Power plants are large and unsightly – people may have to move out of an area </li></ul><ul><li>Waste or leaks from nuclear power stations may cause death or illness </li></ul><ul><li>Increasing energy production creates jobs – build, run and maintaining them </li></ul>
  10. 11. Economic impact <ul><li>Countries with lots of energy resources will become richer as energy demand increases </li></ul><ul><li>Countries with few resources will need to buy from them </li></ul>
  11. 12. Environmental impacts <ul><li>burning fossil fuels releases CO2 which adds to global warming </li></ul><ul><li>Releases gases that contribute to the formation of acid rain </li></ul><ul><li>Gathering wood for fuel can cause deforestation and destroys habitats </li></ul><ul><li>Mining for coal causes air and water pollution. Open cast mining removers large areas of land which destroys more habitats </li></ul><ul><li>Transporting oil either by pipeline or tanker can lead to leaks, Oils spills kills birds and fish and damages the marine ecosystem </li></ul>