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Unit 4 Global Warming

Unit 4 Global Warming. strawberry. What is the greenhouse made and used for ?. A greenhouse is made of glass and is used for growing plants, especially during cold weather. How does greenhouse work?. keep sth in a place. traps the heat from the sun. keeps it from escaping.

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Unit 4 Global Warming

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  1. Unit 4 Global Warming

  2. strawberry

  3. What is the greenhouse made and used for? A greenhouse is made of glass and is used for growing plants, especially during cold weather.

  4. How does greenhouse work? keep sth in a place traps the heat from the sun keeps it from escaping heat up plants can grow throughout the cold period

  5. Greenhouse effect! Nowadays our earth is becoming ___________________. warmer and warmer Global warming

  6. A global warming, A global warning ! How has global warming come about? What can we do about global warming ?

  7. Unit 4 Global warming The Earth is Becoming Warmer--- But Does It Matter?

  8. 1.Who wrote the magazine article? Sophie Armstrong 2. What’s the purpose of paragraph one? To introduce the t opic

  9. Part 1(Paragraph1) Part 2(Paragraphs 2-4) Part 3(Paragraphs5-6) Introduce the topic of global warming Illustrate how global warming comes about List two different attitudes among scientists towards global warming

  10. What attitudes among scientists towards global warming?

  11. The different ideas between Dr. Janice Foster & George Hambley positive go up produce a greater range of animals catastrophe very serious

  12. Part 4(Paragraph 7) It’s up to readers to think and decide whether people should do something about global warming or not

  13. Everyone believes that it is humanactivity that has caused this global warming. The increase in the earth’s temperature is dueto the burning of fossil fuels like coal, natural gas and oil. Some byproducts of this process are called greenhousegases. Such gases can trap heat from the sun and therefore warm the earth,which is called the greenhouseeffect. But we add huge quantitiesof extra greenhouse gases into the atmosphere, causing the global temperature to goup. However, the attitudes of scientists towards this rise are completely different. Dr forster thinks that the trend which increases the temperature by 5degrees would be a catastrophe. But, George Hambley holds the wiew that any warming will be mildwith few bad environmental consequences. More greenhouse gases will make plants grow quicker; crops will produce more; it will encourage a greaterrange of animals. What is your attitude towards global warming? prepare for the worst! hope the best!

  14. suggestions To reduce carbon dioxide and save energy 1.Turn electricalappliances off when not using them. 2.Walk or ride a bike, don’t drive. ……………….

  15. Decide our contents • Choose and decide six most important suggestions. • Write them down by using imperative sentences (祈使句） and try to make them persuasive（有说服力的）.

  16. suggestions Turn electricalappliances off when not using them. Put on more clothes, don’t turn up the heat. Walk or ride a bike, don’t drive. Recycle cans, bottles, plastic bags and newspapers. Buy things made from recycled materials. Buy products that use less energy. Plant trees. Talk with family and friends about global warming. To reduce carbon dioxide and save energy

  17. Make a poster

  18. Create your poster A large heading • …… • …… • …… • …… • …… A slogan

  19. Why should we do exercise? Heading 标题 • to keep fit • to make us strong • to fight illness and disease • to enjoy ourselves • to build up our skills ? Contents内容 Some exercise a day keeps the doctor away! Slogan标语；口号

  20. more suggestions • Use less hot water • Change a light bulb • Try car sharing • Take a shower instead of a bath • Buy fresh food instead of frozen • Buy things that are actually in season • Eat less high fat food like KFC and Macdonald • Clean filters(过滤器) on your air conditioner.

  21. It's show time!

  22. Homework • Put your posters up around the school. • Base on the suggestions, write a short passage about how to solve the problem of global warming.

  23. How has global warming come about? human activity burn fossil fuels greenhouse gases greenhouse effect need those gases add extra carbon dioxide global temperature go up trap more heat energy

  24. What are the two graphs about? Graph 1: Graph 1 shows the temperature increase about one degree Fahrenheit between 1860 to 2000. Graph 2 shows the carbon dioxide content in the atmosphere from 1957 to 1997. Graph 2:

  25. Part 1(Paragraphs 1) Part 2(Paragraphs 2-4) Part 3(Paragraphs5-10) Introduce a debate over the issue of global warming Illustrate how global warming comes about List two different attitudes among scientists towards global warming

  26. Part 4(Paragraphs 11) It’s up to readers to think and decide whether people should do something about global warming or not

  27. Carbon dioxide Methane Water vapor

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