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m6u4warming up and reading


M6 Unit 4 Global Warming The earth is becoming warmer — But does it matter?

Which is the most important to a country?
? ? ? ? Money? Technology? International relations? En

ergy sources?

We depend on energy to do many things in our daily lives. For example, energy lights our cities and heats/cools our buildings.
Q: Things that use energy around us or at any other places?

Things that use energy around us or at any other places: electrical appliances
In a house

hairdryer induction cooker water dispenser

Sources of energy

Windmills, renewable.

What? Renewable?

Solar Panels(电池板), renewable.

What? Renewable?

A hydro-electric dam, renewable.

What? Renewable?

Tidal energy 潮汐能

A coal power station , non-renewable.

What? Renewable?

A nuclear power plant, non-renewable.

What? Renewable?

Non-renewable

Renewable

? Coal ? Wind (wind power) ? Oil ? Sun (solar energy) ? Natural gas ? Water (hydro-electric power) ? of Plant waste植物性废物 ? they Uranium [化 ]铀 Once are run out /run out, they cannot be renewed (biomass energy生物团能量 ) ? Hot springs or geysers间歇泉 (geothermal energy) Fossil fuels ? The sea (tidal energy潮汐能 )

Byproducts?? Greenhouse gases: carbon dioxide

What are these buildings made of and what are they called?

greenhouse

glass

What’s the use?
A greenhouse is used for growing plants, especially during cold weather.

The glass t raps the heat from the sun, making the air warm so that plants can grow better.

How does it work

What do you think greenhouse gases do?

Greenhouse gases perform the same glass function as the ______in a greenhouse --- They trap ______the heat from the sun and therefore _______the earth. warm greenhouse effect It is known as___________________.

Nowadays our earth is becoming warmer and warmer ___________________.

M6 Unit 4 Global Warming The earth is becoming warmer — But does it matter?

The article is from__________. A An environmental magazine A. B. A diary C. A novel D. A story

What is the structure of a magazine like this and how is the text organized? It has a title, a first paragraph that is

in bold, the main text in two columns,
2 graphs图表, two quotes引用,引号 .

The earth is becoming warmer – But does it matter?
Introduction / Editor’s notes
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 come about and does it matter? Earth Care’s Sophie Armstrong explores these questions.

The earth is becoming warmer – But does it matter?
Introduction (Para.1)
Main Body Para. 2 Para. 3 Para. 4 Para. 5

How has global warming come about?

Para. 6 Does it matter? Conclusion (Para.7)

Part 2

Human activity?

Natural phenomenon?

Task: Para.3
Byproducts of burning fossil fuels and producing energy

___________gases Greenhouse
( Carbon dioxide )

Warm the earth

Greenhouse effect ___________

It is human activity that has caused this global
warming rather than a natural phenomenon.

Task: Find out more sentences like “it is … that…” in Para.4 and Para.5.
? It was a scientist called Charles Keeling who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.(para.4) ?It is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide.(para.5)

? ? ? ? ? ?

Keeling receives the Medal of Science in 2001 Nationality:American Fields:atmosphere Known for:Keeling Curve Notable awards:Tyler Prize for Environmental Achievement(2005) 泰勒环境成就奖 环境科学领域的最高奖,有“环境科学的诺贝尔奖”之

Charles David Keeling

Task: Fill in the blank according to the passage.
1.Some byproducts of this process are “greenhouse gases” called __________

? 2.There is a natural phenomenon that scientists greenhouse call the “_________ ”. effect This is when small amounts of gases in the carbon dioxide methane atmosphere, like _________,_______, vapour trap heat from the sun and and water ___________, therefore warm the earth. ? 3.________ Without the “greenhouse effect” the earth would be about thirty-three ________ degrees Celsius cooler than it is. ? , ,

Q: What writing skills have been used?
1.Some byproducts of this process are “Greenhouse gases” called __________ (Defining)

? 2.There is a natural phenomenon that scientists greenhouse call the “_________ ”. effect (Defining) This is when small amounts of gases in the carbon dioxide methane atmosphere, like _________,_______, vapour trap heat from the sun and and water ___________, therefore warm the earth. Giving examples ? 3.________ Without the “greenhouse effect” the earth would be about thirty-three ________ degrees Celsius cooler than it is. , Doing inference推论 Listing numbers,Making contrast 100, 150, 1957,1997, 315,370 100, 1,1.5, 5

What about the the two graphs?

trends(趋势)

of

rise

What are the two graphs about?
The first graph shows the temperature increase about one degree Fahrenheit from 1860 to 2000. The second graph shows the carbon dioxide
content in the atmosphere from 1957 to 1997.

What is the difference between A and B?

A. We know that the levels of carbon dioxide have increased greatly over the last 100 to 150 years. (Para 4) The general trend B. He found that, between these years, the carbon dioxide content of the atmosphere went up from around 315 parts per million to around 370 parts per million. (Para 4) Describe the trend in detail

Part 3:
scientists Quotes (引言) Dr Foster Opinion from people
Meaning

Function of quotes

sea level rise, storm, floods, serious droughts, Attract famines, a serious, ___ thing your attention, diseases, catastropheInterestspecies.

George Hambley

positive, (plants, crops, animals, life)

ing and believable

positive a ____ thing

Post reading: Discussion
scientists Quotes (引言) Dr Foster Opinion from people
Meaning

Function of quotes

sea level rise, storm, floods, serious droughts, Attract serious, your famines, No one knows the effects of a ___ thing Should we do nothing? Or, attention, diseases, global warming catastropheInterestspecies.

George Hambley

are the risks too great?
Positive, plants, crops, animals, life

ing and believable

positive a ____ thing

We can ___________ slow global warming control We can ___________ global warming make use of global warming We can ___________ …

We can take action now!
carbon dioxide ? We can put less __________________into the atmosphere if we generate生产 electricity clean from ________ sources. ? We can also ____________by using drive less ______________. public transportation ? In our daily life, we can reduce our energy use __________by turning off electrical appliances _______________when we don’t use them.

The earth is becoming warmer – But does it matter?
Introduction (Para.1)
Main Body Para. 2 Para. 3 Para. 4 Para. 5

How has global warming come about?

Para. 6 Does it matter? Conclusion (Para.7)

The organization of an expositive(说明文):

A title
Introduction Introduction

Body Cause
Para. 2-5
Para 7

Body Conclusion

Para. 1

Conclusion Para. 6 Attitudes

Main idea of each part Paragraph 1

Writing techniques 写作技巧

Introduction
Paragraph 2-5

raising a question, introducing the body using graphs, …
Using quotes Using a question, leaving readers to think over the issue

Cause
Paragraph 6

Attitudes
Paragraph 7

Conclusion

Post reading

Q: Which one do you prefer as the title of the passage? Why?
? 1.The earth is becoming warmer -- but does it matter? ? 2.The earth is becoming warmer – no one knows the effect of it. ? 3. The earth is becoming warmer – what should we do? ? 4.Is the earth becoming warmer?

Summary Skim over the passage, and tell what you have learnt in class.

eg: I’ve learned that the earth is becoming warmer. . I’ve learned that…

Homework:
? 1.Finish the exercises 1 and 2 on the text book on the page of 27. ? 2.Surf the internet to find more information about global warming.

Let’s join hands to protect our home.

Good bye

One world, one dream!

Warming up:

The Earth is becoming Warmer

Pre-reading:

Look at the pictures in the “warming up” and the “Pre-reading” parts.
? Q: Is global warming caused by human activity? Why?

What about the the two graphs?

trends(趋势)

of

rise

What are the two graphs about?
The first graph shows the temperature increased about one degree Fahrenheit between 1860 to 2000. The second graph shows the carbon dioxide
content in the atmosphere from 1957 to 1997

went up

.

Relationship ? Global warming Increase of CO2

Task: Para.2
Byproducts of burning fossil fuels and producing energy

___________gases Greenhous
( Carbon dioxide )

Warm the earth

___________ Greenhouse effect

It is human activity that has caused this global
warming rather than a natural phenomenon.

(Para. 1- 4) ?Do all scientists agree that it is human activity that There is no doubt has resulted in global warming? . All scientists subscribe ?Do all scientists agree that the increase in the to the view earth’s temperature is due to burning of fossil fuels?. ?Do all scientists agree on the amount of carbon All scientists accept this data. Keeling ? dioxide measured by Charles ?Do all scientists agree that the temperature increase could be as low as 1 to 1.5 degrees ,but it could be as high as 5 degrees?

On the one hand Dr. Foster

On the other hand George Hambley

catastrophe …it could be very serious.

a positive thing …any warming will be mild …

How does the writer make his statements clear?

√ graph
exaggeration(夸张)

√ quotation (引用)
√ example
repetition (反复)



figure
metaphor (比喻)



contrast (对比)

What is the writer’s attitude ?

The earth is becoming warmer – But does it matter?
burning of fossil fuels
Different Attitudes

carbon dioxide

Dr. Janice Foster George Hambley

global warming

The Writer

Should we stop global warming? Can we stop global warming?

We can ___________ slow global warming control We can ___________ global warming make use of global warming We can ___________ …

Homework
Surf the Internet and collect the information about the things we have done with global warming.


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