Global Warming

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Global Warming

  1. 1. Climate Change Global Warming & The Greenhouse Effect
  2. 2. Questions  1. Define the following concepts:  - Climate Change  - Global Warming  - Greenhouse Effect  2. Present arguments based on data/evidence that the earth is actually warming.
  3. 3.  3. What might be causing global warming?  4. Present counter arguments to the global warming debate.  5. What effects might global warming have on the earth and its inhabitants?  6. How might we solve the problem of the Greenhouse Effect?
  4. 4. Objectives  Define the terms: Climate Change, Greenhouse effect and Global Warming  List at least 3 causes of Global Warming  State at least 3 facts that the earth is warming  Explain at least two reasons why you think that the earth isn't warming.  List at least 3 effects of global warming on the earth and its inhabitants.  State at least 5 ways in which global warming can be reduced.
  5. 5. First of all, you should know that weather and climate are not the same thing.
  6. 6. Weather is:  Short term  Limited area  Can change rapidly  Difficult to predict
  7. 7. Climate is:  Long term  Wide area  Season changes  Measures over long spans of time
  8. 8. What is climate change? Climate Change refers to any distinct change in measure of climate lasting for a long period of time.
  9. 9. What is the Greenhouse Effect  The 'greenhouse effect' takes place when certain gases in the atmosphere of the earth trap heat. The term 'greenhouse' is used because light is allowed to reach the earth, but most of the heat generated is not allowed to escape.
  10. 10. Examples of Greenhouse gases • Water vapor (H2O) • Carbon dioxide (CO2) • Nitrous oxide (N2O) • Methane (CH4)
  11. 11. What is Global Warming Global warming refers to the increase in the temperature of the Earth's atmosphere.
  12. 12. Causes of Global Warming Greenhouse gases increase through human activity •Deforestation •Use of fertilizers •Burning of organic matter •Burning of fossil fuels •Uses of aerosol
  13. 13. Natural Causes  Solar Irradiance - energy out put from the sun  Volcanic Aerosols- volcanoes can contribute 130 and 230 million tonnes of carbon dioxide per year
  14. 14. Arguments based on data/ evidence that the earth is actually warming
  15. 15. Arguments  The increase in global temperature over the past 50 years.  The increase in co2 is a result of human activities
  16. 16. Melting of glaciers and ice caps
  17. 17. Evidence- changes in weather patters & rising sea level  Flooding in Brazil (2009)
  18. 18. Flooding in lake district England
  19. 19.  Widespread vanishing of animal populations  Spread of disease  Bleaching of Coral Reefs due to warming seas and acidification due to carbonic acid formation  Loss of Plankton due to warming seas
  20. 20. Heat waves and Droughts in Australia
  21. 21. Counter arguments  There were warmer periods in earth’s history
  22. 22.  Fossil fuel and human activity does not contribute towards global warming  Computer models are not reliable in predicting weather changes.
  23. 23. The sun is responsible for global warming
  24. 24. Effects of global warming on earth & its inhabitants - More powerful and dangerous hurricanes - Drought and wildfire - Intense rainstorms - Bad air allergy & Asthma
  25. 25.  Infectious Disease and Food and Waterborne Illness Outbreaks - Ecosystem Shifts and Species Die-Off
  26. 26. - Melting Glaciers, Early Ice Thaw - - Sea-Level Rise
  27. 27. Solutions for Global Warming  Reduce the usage of electrical appliances which emits green house gases.  Reduce, Reuse, Recycle  Replanting of trees  Insulation of the ceiling of a house
  28. 28.  use only energy-efficient appliances  Consumption of organic food  Dry clothes on a clothes line only  Drive less and drive smart
  29. 29. How has Guyana contributed towards reducing global warming?  Encouraging the use of energy saving light bulbs  Encourages citizens to use energy wisely and conserve as much as possible  Introducing the use of Solar Panels  Low carbon development strategy (LCDS)
  30. 30. Conclusion

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