Global Warming
Changes in the Earth’s Climate
 
What did you just witness? <ul><li>Birds migrating </li></ul><ul><li>Lighting / storm </li></ul><ul><li>Flooding </li></ul...
 
What is Global Warming? <ul><li>The increase in air temperature throughout the world. </li></ul>
 
<ul><li>What can you infer from both pictures? </li></ul>
 
Do you believe there is global warming?
<ul><li>What happened? </li></ul>
 
What causes the temperature to increase? <ul><li>Greenhouse effect </li></ul><ul><ul><li>The gases in the atmosphere trap ...
 
Enhanced greenhouse effect <ul><ul><li>An accelerated greenhouse effect is caused by a rapid increase in the amount of gre...
What causes more greenhouse gases to enter the atmosphere? <ul><li>You might want to write it down at least  three  causes...
 
 
Types of greenhouse gases <ul><li>Carbon dioxide </li></ul>
 
Types of greenhouse gases <ul><li>Nitrous oxide </li></ul>
 
Types of greenhouse gases <ul><li>CFCs </li></ul><ul><ul><li>Chlorofluorocarbons  </li></ul></ul>
Types of greenhouse gases <ul><li>Methane </li></ul>
Methane from rice field
 
Landfill
 
Cow belch
Consequences of global warming
Consequences <ul><li>Changes in weather condition </li></ul><ul><li>Impact on plants </li></ul><ul><li>Impact on animals <...
Changes in weather condition <ul><li>Drought </li></ul><ul><ul><li>Too dry </li></ul></ul><ul><ul><li>Water evaporate fast...
Changes in weather condition <ul><li>Floods </li></ul><ul><ul><li>Too much water vapour in the atmosphere </li></ul></ul><...
Impact on plants <ul><li>Changes in rainfall and temperature could affect the growth of important crops. </li></ul><ul><ul...
 
Impact on animals <ul><li>Migration of animals due to temperature changes </li></ul><ul><ul><li>Yaks and llamas have to mo...
 
Impact on people <ul><li>Increase in temperature leading to spread of diseases such as  </li></ul><ul><ul><li>Dengue fever...
Rising sea level <ul><li>Melting of the ice cap </li></ul><ul><li>Decrease in land area </li></ul><ul><li>Arable farmland ...
 
<ul><li>Can you see the ice cap melting </li></ul><ul><li>Where does the water goes? </li></ul>
 
Any solutions? What can Hillgrove do to battle against global warming?
What can Hillgrove do to battle against global warming? <ul><li>Dateline 10 July 09 </li></ul><ul><li>Best 3 answers will ...
 
 
 
 
 
 
Homework <ul><li>Sec 2 Exp </li></ul><ul><ul><li>Workbook pg 105 to 106 </li></ul></ul><ul><li>Sec 2 NA </li></ul><ul><ul>...
 
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Sec 2 - Gobal Warming

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Sec 2 - Gobal Warming

  1. 1. Global Warming
  2. 2. Changes in the Earth’s Climate
  3. 4. What did you just witness? <ul><li>Birds migrating </li></ul><ul><li>Lighting / storm </li></ul><ul><li>Flooding </li></ul><ul><li>Hurricane </li></ul><ul><li>Snowing etc </li></ul>
  4. 6. What is Global Warming? <ul><li>The increase in air temperature throughout the world. </li></ul>
  5. 8. <ul><li>What can you infer from both pictures? </li></ul>
  6. 10. Do you believe there is global warming?
  7. 11. <ul><li>What happened? </li></ul>
  8. 13. What causes the temperature to increase? <ul><li>Greenhouse effect </li></ul><ul><ul><li>The gases in the atmosphere trap some of the heat from the Sun thus keeping the Earth warm. </li></ul></ul><ul><ul><li>Without these gases, the heat would be lost and living things might not survive because it gets too cold. </li></ul></ul>
  9. 15. Enhanced greenhouse effect <ul><ul><li>An accelerated greenhouse effect is caused by a rapid increase in the amount of greenhouse gases in the atmosphere, trapping more heat from the Sun. </li></ul></ul>
  10. 16. What causes more greenhouse gases to enter the atmosphere? <ul><li>You might want to write it down at least three causes in your note book </li></ul><ul><li>Then we check our answer later </li></ul><ul><li>You have 1 min to do so. </li></ul>
  11. 19. Types of greenhouse gases <ul><li>Carbon dioxide </li></ul>
  12. 21. Types of greenhouse gases <ul><li>Nitrous oxide </li></ul>
  13. 23. Types of greenhouse gases <ul><li>CFCs </li></ul><ul><ul><li>Chlorofluorocarbons </li></ul></ul>
  14. 24. Types of greenhouse gases <ul><li>Methane </li></ul>
  15. 25. Methane from rice field
  16. 27. Landfill
  17. 29. Cow belch
  18. 30. Consequences of global warming
  19. 31. Consequences <ul><li>Changes in weather condition </li></ul><ul><li>Impact on plants </li></ul><ul><li>Impact on animals </li></ul><ul><li>Impact on people </li></ul><ul><li>Rising sea level </li></ul>
  20. 32. Changes in weather condition <ul><li>Drought </li></ul><ul><ul><li>Too dry </li></ul></ul><ul><ul><li>Water evaporate faster </li></ul></ul>
  21. 33. Changes in weather condition <ul><li>Floods </li></ul><ul><ul><li>Too much water vapour in the atmosphere </li></ul></ul><ul><ul><li>Too much rainfall </li></ul></ul>
  22. 34. Impact on plants <ul><li>Changes in rainfall and temperature could affect the growth of important crops. </li></ul><ul><ul><li>Rice </li></ul></ul><ul><ul><li>Wheat </li></ul></ul><ul><ul><li>Corn </li></ul></ul><ul><li>Leading to food shortage & famine </li></ul>
  23. 36. Impact on animals <ul><li>Migration of animals due to temperature changes </li></ul><ul><ul><li>Yaks and llamas have to move to mountainous or cooler area or else face extinction. </li></ul></ul>
  24. 38. Impact on people <ul><li>Increase in temperature leading to spread of diseases such as </li></ul><ul><ul><li>Dengue fever </li></ul></ul><ul><ul><li>Malaria </li></ul></ul><ul><ul><li>Yellow fever </li></ul></ul><ul><li>Increasing temperatures may lead to dehydration and heat stroke </li></ul>
  25. 39. Rising sea level <ul><li>Melting of the ice cap </li></ul><ul><li>Decrease in land area </li></ul><ul><li>Arable farmland may be destroyed </li></ul><ul><li>People have to move from coastal area to higher ground. </li></ul>
  26. 41. <ul><li>Can you see the ice cap melting </li></ul><ul><li>Where does the water goes? </li></ul>
  27. 43. Any solutions? What can Hillgrove do to battle against global warming?
  28. 44. What can Hillgrove do to battle against global warming? <ul><li>Dateline 10 July 09 </li></ul><ul><li>Best 3 answers will win a prize </li></ul><ul><li>Put your answer in the box (Mr. Caleb Chua Pigeon hold) </li></ul><ul><li>Please write behind </li></ul><ul><ul><li>Your name </li></ul></ul><ul><ul><li>Your class </li></ul></ul>
  29. 51. Homework <ul><li>Sec 2 Exp </li></ul><ul><ul><li>Workbook pg 105 to 106 </li></ul></ul><ul><li>Sec 2 NA </li></ul><ul><ul><li>Work pg 117 to 118 </li></ul></ul>

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