优质课课件M6U4-Global-Warming-THE-EARTH-IS-BECOMING-WARMER-BUT-DOES-IT-MATTER

1、Unit 4 Global Warming12021/3/171. consume energy 2. greenhouse3. greenhouse gases4. the greenhouse effect5. degree Fahrenheit6. degree Celsius7. atmosphere8. fossil fuel9. carbon dioxide10. renewable source11. non-renewable source12. Natural resources13. Low-carbon lifestyle 消耗能源消耗能源 温室温室 温室气体温室气体 温

2、室效应温室效应 华氏度华氏度 摄氏度摄氏度 大气层大气层 化石燃料化石燃料 二氧化碳二氧化碳 可再生资源可再生资源 不可再生资源不可再生资源 自然资源自然资源 低碳生活低碳生活Related words :frhait selsis 1 =-1722021/3/17Things that consume energy in our schoolelectric fanair-conditionermulti-mediacomputer32021/3/17 heating hairdryer Things that consume energy at homerefrigeratorcarpho

3、newashing machine42021/3/17But where does all this energy come from?Wind energy is used as power to produce electricity. windmills52021/3/17 windmillsRenewable Wind energy is used as power to produce electricity.62021/3/17Electricity is produced by burning coals.coal power stationsnon-renewable72021

4、/3/17Oil is refined and made pure. oil refineriesnon-renewable82021/3/17Nuclear energy is converted into electricity.nuclear power plantnon-renewable92021/3/17Pieces of equipment on a roof that collects energy from sunlight in order to heat water and produce electricity solar panelsrenewable102021/3

5、/17Water are kept back and raised its level for irrigation or for producing electricity.hydro-electric damsrenewable112021/3/17geothermal (地热的) energy plantElectricity is generated from hot dry rocks.renewabledi:u:ml 122021/3/17What if we use up the natural resources one day?132021/3/17Traffic restr

6、ictions based on the last digit of license plate numbersTraffic restrictions based on even- and odd-numbered license plates私家车尾号限行政策私家车尾号限行政策单双号限行措施单双号限行措施Issuenewcarlicenseplates via bidding and lottery通过竞价和摇号两种方式发放车牌通过竞价和摇号两种方式发放车牌The policy came into effect in Hangzhou142021/3/17The greenhouse ef

7、fectQ1: What is a greenhouse?152021/3/17The greenhouse effectQ2: How does it work?trapescapingheat up162021/3/17The greenhouse effectQ3: What is greenhouse effect?Greenhouse gases trap the heat of the sun and keep it from escaping, which causes our world to heat up.172021/3/17The greenhouse effectQ4

8、: What is the result of greenhouse effect?the melting of glaciersthe rise of sea levelthe extinction of species182021/3/17THE EARTH IS BECOMING WARMER - BUT DOES IT MATTER?192021/3/17 During the 20th century the temperature of the earth rose about one degree Fahrenheit. That probably does not seem m

9、uch to you or me, but it is a rapid increase when compared to other natural changes. So how has this come about and does it matter? Earth Cares Sophie Armstrong explores these questions.202021/3/17 During the 20th century the temperature of the earth rose about one degree Fahrenheit. That probably d

10、oes not seem much to you or me, but it is a rapid increase when compared to other natural changes. So how has this come about and does it matter? Earth Cares Sophie Armstrong explores these questions.212021/3/17 During the 20th century the temperature of the earth rose about one degree Fahrenheit. T

11、hat probably does not seem much to you or me, but it is a rapid increase when compared to other natural changes. So how has this come about and does it matter? Earth Cares Sophie Armstrong explores these questions.222021/3/17 During the 20th century the temperature of the earth rose about one degree

12、 Fahrenheit. That probably does not seem much to you or me, but it is a rapid increase when compared to other natural changes. So how has this come about and does it matter? Earth Cares Sophie Armstrong explores these questions.232021/3/17 During the 20th century the temperature of the earth rose ab

13、out one degree Fahrenheit. That probably does not seem much to you or me, but it is a rapid increase when compared to other natural changes. So how has this come about and does it matter? Earth Cares Sophie Armstrong explores these questions.242021/3/17 During the 20th century the temperature of the

14、 earth rose about one degree Fahrenheit. That probably does not seem much to you or me, but it is a rapid increase when compared to other natural changes. So how has this come about and does it matter? Earth Cares Sophie Armstrong explores these questions.Q1. Where can you probably see this article?

15、A. in a novelB. in a magazineC. in a math bookD. in an advertisement252021/3/17 During the 20th century the temperature of the earth rose about one degree Fahrenheit. That probably does not seem much to you or me, but it is a rapid increase when compared to other natural changes. So how has this com

16、e about and does it matter? Earth Cares Sophie Armstrong explores these questions.Q2. What is the authors attitude towards the problem?A. ApprovingB. CriticalC. NeutralD. Indifferent=Objective262021/3/17 During the 20th century the temperature of the earth rose about one degree Fahrenheit. That prob

17、ably does not seem much to you or me, but it is a rapid increase when compared to other natural changes. So how has this come about and does it matter? Earth Cares Sophie Armstrong explores these questions.Introduction (para1)(para2-5)(para6)Conclusion(para7)Body272021/3/17How has this come about (p

18、ara2) There is no doubt that the earth is becoming warmer (see Graph 1) From _ to _, the temperature went up about _ degree Fahrenheit. 186020001and it is human activity that has caused this global warming rather than a random but natural phenomenon.282021/3/17 All scientists subscribe to the view t

19、hat the increase in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Foster explains: “There is a natural phenomeno

20、n that scientists call the greenhouse effect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about thirty-three degrees Celsius cooler than it

21、 is. So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (para3) 292021/3/17 All scientists subscribe

22、 to the view that the increase in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Foster explains: “There is a nat

23、ural phenomenon that scientists call the greenhouse effect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about thirty-three degrees Celsius

24、cooler than it is. So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (para3) 302021/3/17 All scient

25、ists subscribe to the view that the increase in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Foster explains: “

26、There is a natural phenomenon that scientists call the greenhouse effect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about thirty-three de

27、grees Celsius cooler than it is. So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (para3) 312021/3

28、/17 All scientists subscribe to the view that the increase in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Fost

29、er explains: “There is a natural phenomenon that scientists call the greenhouse effect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about t

30、hirty-three degrees Celsius cooler than it is. So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (p

31、ara3) 322021/3/17 All scientists subscribe to the view that the increase in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide.

32、 DrJanice Foster explains: “There is a natural phenomenon that scientists call the greenhouse effect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth wo

33、uld be about thirty-three degrees Celsius cooler than it is. So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this

34、 come about (para3) 332021/3/17How has this come about (para4) From _, the carbon dioxide in the atmosphere went up from _to_.1957 to 2000around 315 partsaround 370 parts per million342021/3/17 All scientists subscribe to the view that the increase in the earths temperature is due to the burning of

35、fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Foster explains: “There is a natural phenomenon that scientists call the greenhouse effect. This is when small amo

36、unts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about thirty-three degrees Celsius cooler than it is. So, we need those gases. The problem begins when we add huge qu

37、antities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (para3) 352021/3/17 All scientists subscribe to the view that the increase in the earths temperature is due to t

38、he burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Foster explains: “There is a natural phenomenon that scientists call the greenhouse effect. This is

39、when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about thirty-three degrees Celsius cooler than it is. So, we need those gases. The problem begins when

40、we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (para3) 362021/3/17 All scientists subscribe to the view that the increase in the earths temperatu

41、re is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Foster explains: “There is a natural phenomenon that scientists call the greenhouse ef

42、fect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about thirty-three degrees Celsius cooler than it is. So, we need those gases. The proble

43、m begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (para3) 372021/3/17 All scientists subscribe to the view that the increase in the ea

44、rths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Foster explains: “There is a natural phenomenon that scientists call the

45、 greenhouse effect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about thirty-three degrees Celsius cooler than it is. So, we need those gas

46、es. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (para3) 382021/3/17 All scientists subscribe to the view that the incr

47、ease in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Foster explains: “There is a natural phenomenon that scien

48、tists call the greenhouse effect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about thirty-three degrees Celsius cooler than it is. So, we

49、need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (para3) 392021/3/17 All scientists subscribe to the view

50、 that the increase in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Foster explains: “There is a natural phenome

51、non that scientists call the greenhouse effect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about thirty-three degrees Celsius cooler than

52、it is. So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (para3) 402021/3/17 All scientists subscri

53、be to the view that the increase in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Foster explains: “There is a n

54、atural phenomenon that scientists call the greenhouse effect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about thirty-three degrees Celsiu

55、s cooler than it is. So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (para3) 412021/3/17 All scie

56、ntists subscribe to the view that the increase in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy. Some byproducts of this process are called “greenhouse” gases, the most important one of which is carbon dioxide. DrJanice Foster explains:

57、 “There is a natural phenomenon that scientists call the greenhouse effect. This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm the earth. Without the greenhouse effect, the earth would be about thirty-three

58、degrees Celsius cooler than it is. So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere. It means that more heat energy tends to be trapped in the atmosphere causing the global temperature to go up.”How has this come about (para3) 422021

59、/3/17How has this come about (para5) All scientists accept this data. They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide. So how high will the temperature increase go? Dr Janice Foster says that over the next 100 years the amount

60、 of warming could be as low as 1 to 1.5 degrees Celsius, but it could be as high as 5 degrees.432021/3/17How has this come about (para5) All scientists accept this data. They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide. So how