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Energy - PowerPoint PPT Presentation

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  1. Energy Clicker quiz

  2. Which is NOT TRUE about oil? • Large distribution network and easily accessible. • The technology needed to use this resource is not well developed. • Non-renewable and will run out. At present we have no viable alternatives to replace them • Extraction causes erosion and contamination of soil from spills, air pollution from gas flares.

  3. Which is TRUE about oil? • Transport in pipelines and ocean tankers is safe.  • Burning fossil fuels does not contribute to the greenhouse effect and acid rain. • The most widely used energy resource around the world, but is used most in the MEDC’s. • Gases produced in the combustion of fossil fuels include methane and chlorofluorocarbons.

  4. Which is a DISADVANTAGE of biomass? A. Although initially a renewable energy source, many nations use this energy source faster than it can be created. B. Extensive use in all areas of human society, but especially in developing nations. C. Cheapest form of energy to extract and make use of, especially when used locally. D. Very little technology is needed to burn solid fuel such as wood.

  5. Which is TRUE about nuclear power? • The fuel in nuclear power is uranium – 235, which is a renewable resource. • The waste material can be radioactive for 1000’s of years. • Nuclear power is inexpensive compared to other options. • Nuclear power produces green house gases, including carbon dioxide.

  6. Which is an ADVANTAGE of hydroelectric power? A. Hydroelectric power needs to be transported through high voltage transmission lines. B. Flooding of fertile river valleys disturbs natural ecosystems and human settlement. C. Technologically advanced system requiring educated professionals for installation and maintenance. D. No greenhouse gases are produced when hydroelectric power is used.

  7. Which of the following are all renewable energy resources? • Hydroelectric, solar, coal • Hydroelectric, nuclear, wind • Solar, biomass, natural gas • Solar, biomass, wind

  8. Which air pollutants are released in the combustion of coal? • Carbon dioxide and sulfur dioxide • Carbon dioxide only • Sulfur dioxide • Methane and carbon dioxide

  9. Which air pollutants are released in nuclear power? • Carbon dioxide and methane • Carbon dioxide and nitrogen monoxide • Carbon dioxide and water • No gases are released

  10. Which are the most common energy resources used by LEDC’s? • Fossil fuels and biomass • Fossil fuels and nuclear • Fossil fuels, nuclear and solar • Fossil fuels, hydroelectric and solar energy

  11. What can be said about the differences in energy usages between MEDC’s and LEDC’s? • MEDC’s use more energy than LEDC’s overall. They also use more energy that requires technology, such as nuclear and hydroelectric power. • MEDC’s use less energy than LEDC’s overall. They also use more energy that requires technology, such as hydroelectric power. • .MEDC’s use more energy than LEDC’s overall. They also use more energy that requires simple technology, such as solid biofuels. • .MEDC’s use more energy than LEDC’s overall. They also use more renewable energy resources than LEDC’s.

  12. Why do people in LEDC’s use solid biofuels (wood) more than in MEDC’s? • Solid biofuels are cheap and simple to use. They produce carbon dioxide as well as soot that pollutes the air. • Solid biofuels are readily available in LEDC’s. They do not exist in MEDC’s. • Solid biofuels pollute less than fossil fuels. • Solid biofuels are not fashionable in MEDC’s.

  13. Which is true about wind power? • Wind power is not popular in the world, nor will it ever be popular. It is too expensive. • Wind power is becoming more important in the world because the technology is improving, it is renewable, and it does not produce air pollution. • Wind power has very few disadvantages. • Wind power is easier to use than solid biofuels.

  14. The biggest DISADVANTAGE about consumption of fossil fuels include: • Radioactive waste and danger of accidents at the power plants. • Greenhouse gases, acid rain, and photochemical smog • Accidents at coal mines • More difficult to extract than solar or wind power.

  15. The biggest DISADVANTAGE in using nuclear power: • It is too expensive for LEDC’s. • It produces greenhouse gases, such as carbon dioxide • The radioactive waste is dangerous and countries with nuclear power may build nuclear weapons. • Rivers are dammed to produce nuclear power, and this affects the ecosystems.

  16. Calculate the percent increase in oil use in the USA from 1980 to 2006 1980: 4.38 TW and in 2006: 5.74 TW (TW = terawatts = 1.0 x1012 Watts) • 31% decrease • 31% increase • 24% increase • 76%

  17. Calculate the percent increase in hydroelectric power in the USA using the data below 1980: 0.60 TW and 2006: 1.00 TW Source: US Energy Information Administration • 100% increase • 60% increase • 67% increase • 40% increase

  18. Comment on this graph • The y axis has no label • The graph has no title • Oil is the world’s favorite energy resource • Why are geothermal, solar, wind and wood so low?

  19. Biofuels such as ethanol have become popular in the USA and Brazil. Which is true? • Biofuels are the way of the future. The corn grows and we get energy for free! • Biofuels, such as ethanol from corn may be partly to blame for the recent increase in food prices. • Biofuels do not pollute the water or soil when they are grown and processed. • No carbon dioxide is released when biofuels are burned.