Global Warming


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Global Warming

  1. 1.   English Inmersion Program Subject: Golabal Warming supported by: Maiquel presented to: Arismendy Mercedes Date: September, 2009
  2. 2. Global Warming: <ul><li>Global warming  is the increase in the  average temperature  of the Earth's near-surface air and oceans since the mid-20th century and its projected continuation. The  Intergovernmental Panel on Climate Change  (IPCC) concludes that increasing  greenhouse gas  concentrations resulting from  human activity  such as  fossil fuel  burning and  deforestation   caused  most of the observed temperature increase since the middle of the 20th century. </li></ul>
  3. 6. Temperature Changes:   <ul><li>Two millennia of mean surface temperatures according to different reconstructions, each smoothed on a decadal scale. The unsmoothed, annual value for 2004 is also plotted for reference. </li></ul><ul><li>The most commonly discussed measure of global warming is the trend in globally averaged temperature near the Earth's surface. Expressed as a  linear  trend, this temperature rose by 0.74°C ±0.18°C over the period 1906-2005. The rate of warming over the last 50 years of that period was almost double that for the period as a whole (0.13°C ±0.03°C per decade, versus 0.07°C ± 0.02°C per decade).  </li></ul>
  4. 12. Global Warming Causes : <ul><li>Global Warming is caused by many things. The causes are split up into two groups, man-made or anthropogenic causes, and natural causes . </li></ul><ul><li>Natural Causes </li></ul><ul><li>Man-made Causes </li></ul>
  5. 13. Natural Causes: <ul><li>Natural causes are causes created by nature. One natural cause is a release of methane gas from arctic tundra and wetlands. Methane is a greenhouse gas. A greenhouse gas is a gas that traps heat in the earth's atmosphere. Another natural cause is that the earth goes through a cycle of climate change. This climate change usually lasts about 40,000 years . </li></ul>
  6. 18. Man-made Causes: <ul><li>Man-made causes probably do the most damage. There are many man-made causes. Pollution is one of the biggest man-made problems. Pollution comes in many shapes and sizes. Burning fossil fuels is one thing that causes pollution. Fossil fuels are fuels made of organic matter such as coal, or oil. When fossil fuels are burned they give off a green house gas called CO2. Also mining coal and oil allows methane to escape. How does it escape? Methane is naturally in the ground. When coal or oil is mined you have to dig up the earth a little. When you dig up the fossil fuels you dig up the methane as well. </li></ul><ul><li>  </li></ul>
  7. 23. Effects of Global Warming : <ul><li>Some impacts from increasing temperatures are already happening. Ice is melting worldwide, especially at the Earth’s poles. This includes mountain glaciers, ice sheets covering West Antarctica and Greenland, and Arctic sea ice. </li></ul>
  8. 28. Global Warming Solutions: <ul><li>Global Warming is a dramatically urgent and serious problem. We don't need to wait for governments to find a solution for this problem: each individual can bring an important help adopting a more responsible lifestyle: starting from little, everyday things. It's the only reasonable way to save our planet, before it is too late. </li></ul>
  9. 29. Here is a list of 7 simple things : <ul><li>Replace a regular incandescent light bulb with a compact fluorescent light bulb (cfl) CFLs use 60% less energy than a regular bulb. This simple switch will save about 300 pounds of carbon dioxide a year. </li></ul>
  10. 30. <ul><li>Don't let heat escape from your house over a long period . When airing your house, open the windows for only a few minutes. If you leave a small opening all day long, the energy needed to keep it warm inside during six cold months (10ºC or less outside temperature) would result in almost 1 ton of CO2 emissions . </li></ul><ul><li>Cover your pots while cooking. Doing so can save a lot of the energy needed for preparing the dish. Even better are pressure cookers and steamers: they can save around 70%! </li></ul><ul><li>  Be sure you’re recycling at home. You can save 2,400 pounds of carbon dioxide a year by recycling half of the waste your household generates. </li></ul>
  11. 31. <ul><li>Recycle your organic waste Around 3% of the greenhouse gas emissions through the methane is released by decomposing bio-degradable waste. By recycling organic waste or composting it if you have a garden, you can help eliminate this problem! Just make sure that you compost it properly, so it decomposes with sufficient oxygen, otherwise your compost will cause methane emissions and smell foul . </li></ul><ul><li>Plant a tree. A single tree will absorb one ton of carbon dioxide over its lifetime. Shade provided by trees can also reduce your air conditioning bill by 10 to 15%.  </li></ul>
  12. 32. <ul><li>Eat less meat Methane is the second most significant greenhouse gas and cows are one of the greatest methane emitters. Their grassy diet and multiple stomachs cause them to produce methane, which they exhale with every breath. </li></ul><ul><li>  </li></ul>
  13. 33. If we do these simple things, we´ll have a world like this