words review consume renewable greenhouse fahrenheit vt. 消费 ; 消耗 ; 耗尽 ; 吃完 adj....
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Words review
consume
renewable
greenhouse
Fahrenheit
vt. 消费 ; 消耗 ; 耗尽 ;
吃完adj. 能再生的 ; 可更新的n. 温室 ; 花房adj. 华氏的n. 华氏温度计
Unit 4 Global Warming
What causes the global warming?
Human activity or a random but
natural phenomenon?
A greenhouse
is made of
______ and is
used for growing
_______,
especially during
_____ weather.
What is a greenhouse made of and used for?
glass
plants
cold
Unit 4 Global Warming
Reading:The earth is becoming warmer---
but does it matter?
3.What are the two graphs about?Graph 1 shows the temperature increase of one degree Fahrenheit between 1860 to 2000. Graph 2 shows the
carbon dioxide content in the atmosphere from 1957 to 2000.
Graph 1:
Graph 2:
Main ideas of each partMain ideas of each partPart1 Part1
(1)(1)
The background of this article.
Part2Part2(2-5)(2-5)
Explanation about how global warming comes about.
Part3Part3(6)(6)
Part4Part4(7)(7)
Two choices of dealing with this problem.
Introduce a debate over the issue of global warming
Explanation about how global warming comes about.
Two different attitudes among scientists towards global warming.
Para. 2,3,4 & 5
①What has caused global warming?
Detailed Reading
There is no doubt that the earth is becoming warmer and that it is human
activity that has caused this global warming rather than a random but natural
phenomenon.
Human activity:
____________
the ________ of carbon dioxide
more ____ will be ______in the
atmosphere
the increase in the earth’s
temperature
the burning of fossil fuels
result in
How has this come about?
increase
heat energytrapped
Para. 3, 4 &5
coal, natural gas &oil
evidence from Charles Keeling
the greenhouse effect
②
Para. 6 Janice Foster& supporters
George Hambley& supporters
AttitudeTemperature increase would be a ___________.
We shouldn’t ________.
Prediction
It could be very _______.
Any warming will be _____ with _____ bad environmental consequences.
Possible consequences
1.2.
3.4.
More carbon dioxide is _________,because________________________________________________________________________.
sea level risesevere storms, floods, droughts, famines
the spread of diseasesdisappearance of species
positive
mildfew
worry
serious
plants grow quicker crops produce more
a greater range of animals human life easier and better
Catastrophe
A : We shall do something about global warming.
B: We shall do nothing about global warming.
Debate
Agreement & Disagreement• Exactly.• All right.• That’s right.• That’s a good idea.• I think so.• I couldn’t agree
more.• That’s exactly my
opinion.
• I don’t think so.
• I’m afraid not.
• I’m afraid I disagree with you.
• I’m afraid I have a different opinion..
• I think you are absolutely wrong.
Homework: Write a speech to call on people to care our earth
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