1、Unit 4 Global WarmingWe depend on energy to do many things in our daily lives.For example,energy lights ourcities and heats our buildings.Make a list of things that use energy in your home,in your school,or any other places you can think of.6 students a group.TVFridgeWashing machineThings depending
2、energy in our everyday lifeAir conditionerMicrowave ovenWhere does all this energy come from?Make another list of as many resourcesAs you can.Wind energyCoal energyOil energyNuclear energySolar energySolar energyhydropowerhydropowerAn energy source is“renewable”when supplies Of it never run out and“
3、non-renewable”when One day they will run out.Which energy source on you list are renewable and which are non-renewable?renewableNon-renewablerenewablerenewablerenewablerenewablerenewableNon-renewableNon-renewablerenewablegreenhouseWhy the greenhouse can make the plants grow?In the atmosphere surroun
4、ding the In the atmosphere surrounding the earth there are gases called“green-earth there are gases called“green-house gases”.What do you think house gases”.What do you think greenhouse gases do?greenhouse gases do?ReadingThe Earth Is Becoming Warmer -But does It Matter?ReadingReading 1Read the pass
5、age quickly and answer the following questions.1.Who wrote the magazine article?What is the 1.Who wrote the magazine article?What is the name of the magazine?name of the magazine?2.What are the names of three scientists 2.What are the names of three scientists mentioned in the article?mentioned in t
6、he article?3.What do they think about global warming?3.What do they think about global warming?Do they agree with one another?Do they agree with one another?4.What are the two graphs about?4.What are the two graphs about?1.Who wrote the magazine article?What is the 1.Who wrote the magazine article?W
7、hat is the name of the magazine?name of the magazine?Sophie Armstrong.Earth Care.2.What are the names of three scientists 2.What are the names of three scientists mentioned in the article?mentioned in the article?Dr.Janice Foster,Charles Keeling,George Hambley.3.What do they think about global warmi
8、ng?3.What do they think about global warming?Do they agree with one another?Do they agree with one another?There are some very different attitudes among scientists towards this issue.Some think the effects will be terrible,while some others Believe that we should not worry about it.4.What are the tw
9、o graphs about?4.What are the two graphs about?The first graph shows the temperature increase of one degree Fahrenheit between 1860 to 2000.The second graph shows the Carbon dioxide content in the atmosphere from 1957 to 1997.ReadingReading 2Read the passage carefully and judge whether the statement
10、s are true or false?1.The temperature in the last century didnt seem to 1.The temperature in the last century didnt seem to increase too much.()increase too much.()2.Everyone believes that global warming is caused by 2.Everyone believes that global warming is caused by the activities of humans.()the
11、 activities of humans.()3.Janice Foster believes that she can measure the future 3.Janice Foster believes that she can measure the future global rise in temperature.()global rise in temperature.()4.The rise in carbon dioxide is causing a steady increase in 4.The rise in carbon dioxide is causing a s
12、teady increase in global warming.()global warming.()5.It is clear what the effects of global warming will be.()5.It is clear what the effects of global warming will be.()TTTFFRead the passage again and make the best choices.1.Who found out the amount of carbon dioxide in the atmosphere from 1957 to
13、1977?A.Dr.Janice Foster.B.Charles Keeling.C.George Hambley.D.Sophie Armstrong.ReadingReading 32.The author probably agrees that _A.actually global warming is good for man.B.we should do nothing about the global warming.C.catastrophes will happen if the globe keeps on warming.D.a lot remains to be found out about the effects of global warming.What else should we do to reduce theWhat else should we do to reduce the amount of carbon dioxide?amount of carbon dioxide?HomeworkHomework:1.Recite the new words and expressions of this part.2.Complete Exercise 1 and 2 on page 31.
