Unit 4 Global warming
文档属性
| 名称 | Unit 4 Global warming |  | |
| 格式 | zip | ||
| 文件大小 | 1.8MB | ||
| 资源类型 | 教案 | ||
| 版本资源 | 人教版（新课程标准） | ||
| 科目 | 英语 | ||
| 更新时间 | 2013-03-25 15:26:06 | ||
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课件21张PPT。Unit 4 Global WarmingSave the earth!Have you ever seen a greenhouse?What are these greenhouses made of ?How does it work?The glass traps the heat from the sun, making the air warm so that plants can grow better.The earth is in a greenhouse.greenhouse effectThe Earth Is Becoming Warmer
But Does It Matter?Step1 Fast Reading
Read the text and then match the main idea of each part.Para.1 A the cause of the earth’s becoming warmer
Para2. B the consequence of burning fossil fuels
Para3. C the increase of carbon dioxide
Para4. D global warming will go on
Para5. E different attitudes to global warming
Para6. F different attitudes to global warming
Para7. G an introduction to the passage Step II Careful ReadingPara 1(1).Who wrote the magazine article?
(2).What is the name of the magazine?→ Earth Care.→ Sophie ArmstrongPara 2Listen, read at the same time, and think:(1).What is Graph 1 about?
(2).How has the global warming come about?Graph 1 shows the temperature ______
of___ degree Fahrenheit from ____ to
____.increaseone18602000It is ______ ______ that has
caused this global warming.humanactivity1. Greenhouse gases include ___, ___ and ___.
water vapor B. natural gas
C. carbon dioxide D. methane
E. fossil fuels.
ACDPara 3Para 3 2. Read and fill in the blanks
Greenhouse effect happens when gases trap ___ from the ____ and therefore ____ the earth.heatsunwarmPara 4&51.The levels of Co2 have increased greatly over the past 150 years.
(2) Graph 2 shows Co2 content in the atmasphere,1957-1997.
(3) Most scientists accept the data made
by Janice Foster.
(4) The amount of warming could be as high as 1 degree.
do “T” or “F” exercise:100-150FFFTAllCharles Keeling5 degreesPara 6List two different attitudes among scientists towards global warming.The different ideas between Dr. Janice Foster & George Hambleygo upcatastrophevery seriouspositiveproducea greater range of
animalsThe author probably agrees that___.
actually global warming is good for human.
catastrophes will happen eventually due to global warming.
a lot remains to be found out about the effects of global warming
Para 7Summary and Discussion As a senior middle school student, what should we do to stop the earth from becoming warmer?全球气候变暖是目前人类面临的最大环境问题。请你根据以下提示，写一篇英语短文，为“节能减排”献计献策。背景随着经济的发展，更多的温室气体被排放，其中大约70%为二氧化碳，这也是全球变暖的主要原因之一后果海平面上升；自然灾害频繁。
措施:1.多使用清洁、可再生能源，少用煤、油；
2.在可能的情况下以步代车；
3.......
4.......
要求：1.短文必须包括表格中的所有内容要点，可适当发挥，措施中3、4点由考生自由发挥；
2.词数：100左右 HOMEWORKWith the development o economy, more and more greenhouse gases are being discharged into the air .CO2 makes up about70% of the greenhouses gases, which is considered to be one of the greatest
Causes of global warming. It has harmful effects, causing the sea level to rise and Many natural disasters to strike. So we must take effective measures to save our planet .First, we should use more clean energy and less coal and oil. Second, we should go to work on foot or by bus instead of driving a car if possible. Third ,we should plant more trees, because plants can turn CO2 into oxygen. More importantly, we should form the habit of saving energy in our daily life.Bye!
But Does It Matter?Step1 Fast Reading
Read the text and then match the main idea of each part.Para.1 A the cause of the earth’s becoming warmer
Para2. B the consequence of burning fossil fuels
Para3. C the increase of carbon dioxide
Para4. D global warming will go on
Para5. E different attitudes to global warming
Para6. F different attitudes to global warming
Para7. G an introduction to the passage Step II Careful ReadingPara 1(1).Who wrote the magazine article?
(2).What is the name of the magazine?→ Earth Care.→ Sophie ArmstrongPara 2Listen, read at the same time, and think:(1).What is Graph 1 about?
(2).How has the global warming come about?Graph 1 shows the temperature ______
of___ degree Fahrenheit from ____ to
____.increaseone18602000It is ______ ______ that has
caused this global warming.humanactivity1. Greenhouse gases include ___, ___ and ___.
water vapor B. natural gas
C. carbon dioxide D. methane
E. fossil fuels.
ACDPara 3Para 3 2. Read and fill in the blanks
Greenhouse effect happens when gases trap ___ from the ____ and therefore ____ the earth.heatsunwarmPara 4&51.The levels of Co2 have increased greatly over the past 150 years.
(2) Graph 2 shows Co2 content in the atmasphere,1957-1997.
(3) Most scientists accept the data made
by Janice Foster.
(4) The amount of warming could be as high as 1 degree.
do “T” or “F” exercise:100-150FFFTAllCharles Keeling5 degreesPara 6List two different attitudes among scientists towards global warming.The different ideas between Dr. Janice Foster & George Hambleygo upcatastrophevery seriouspositiveproducea greater range of
animalsThe author probably agrees that___.
actually global warming is good for human.
catastrophes will happen eventually due to global warming.
a lot remains to be found out about the effects of global warming
Para 7Summary and Discussion As a senior middle school student, what should we do to stop the earth from becoming warmer?全球气候变暖是目前人类面临的最大环境问题。请你根据以下提示，写一篇英语短文，为“节能减排”献计献策。背景随着经济的发展，更多的温室气体被排放，其中大约70%为二氧化碳，这也是全球变暖的主要原因之一后果海平面上升；自然灾害频繁。
措施:1.多使用清洁、可再生能源，少用煤、油；
2.在可能的情况下以步代车；
3.......
4.......
要求：1.短文必须包括表格中的所有内容要点，可适当发挥，措施中3、4点由考生自由发挥；
2.词数：100左右 HOMEWORKWith the development o economy, more and more greenhouse gases are being discharged into the air .CO2 makes up about70% of the greenhouses gases, which is considered to be one of the greatest
Causes of global warming. It has harmful effects, causing the sea level to rise and Many natural disasters to strike. So we must take effective measures to save our planet .First, we should use more clean energy and less coal and oil. Second, we should go to work on foot or by bus instead of driving a car if possible. Third ,we should plant more trees, because plants can turn CO2 into oxygen. More importantly, we should form the habit of saving energy in our daily life.Bye!