人教版英语选修6 Unit 4 Global warming warming up and reading课件 (共31张PPT)

课件31张PPT。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 energy in our everyday lifeAir conditionerMicrowave ovenWhere does all this energy come from?
Make another list of as many resources
As you can.Wind energyCoal energyOil energyNuclear energySolar energyhydropowerAn energy source is “renewable” when supplies
Of it never run out and “non-renewable” when
One day they will run out. Which energy source
on you list are renewable and which are non-
renewable?ThinkingrenewableNon-renewablerenewablerenewablerenewablerenewablerenewableNon-renewableNon-renewablerenewablegreenhouseWhy the greenhouse can make the
plants grow?DISCUSSIONIn the atmosphere surrounding the
earth there are gases called “green-
house gases”. What do you think
greenhouse gases do?ReadingThe Earth Is Becoming Warmer
-But does It Matter?Reading 1Read the passage quickly and answer the following
questions.1.Who wrote the magazine article? What is the
name of the magazine?
2.What are the names of three scientists
mentioned in the article?
3.What do they think about global warming?
Do they agree with one another?
4.What are the two graphs about?1.Who wrote the magazine article? What is the
name of the magazine?Sophie Armstrong. Earth Care.2.What are the names of three scientists
mentioned in the article?Dr. Janice Foster, Charles Keeling, George
Hambley.3.What do they think about global warming?
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 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.Reading 2Read the passage carefully and judge whether
the statements are true or false? 1.The temperature in the last century didn’t seem to
increase too much.( )
2.Everyone believes that global warming is caused by
the activities of humans.( )
3.Janice Foster believes that she can measure the future
global rise in temperature.( )
4.The rise in carbon dioxide is causing a steady increase in
global warming.( )
5.It is clear what the effects of global warming will be.( )TTTFFRead the passage again and make the best choices.Who found out the amount of carbon dioxide
in the atmosphere from 1957 to 1977? A. Dr. Janice Foster. B. Charles Keeling. C. George Hambley. D. Sophie Armstrong.Reading 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.
DiscussionWhat else should we do to reduce the
amount of carbon dioxide?Homework:1.Recite the new words and expressions
of this part.
2.Complete Exercise 1 and 2 on page 31.Goodbye!