Do you know any kind of energy resources?

Sources of energy

coal oil natural gas

wind (wind power)

sun (solar energy)

water (hydro-electric power)

uranium (nuclear energy)

plant waste (biomass energy)

the sea (tidal energy)

hot springs (geothermal (地热的 ) energy)

non-renewable sources

renewable sources

What is fossil fuel?

Ancient animal and plant material below the surface of the earth with a high carbon content, such as coal, oil and natural gas, which can be burnt to produce energy. Also known as non-renewable energy because once they are used they have gone forever; they cannot be renewed.

The use of energy

Give off carbon dioxide, other wasted gases and heat into

the air

The earth is becoming warmer

and warmer. (global warming)

We use much energy in our daily life, what is the effect of using energy on our world?

greenhouse effect

What is the greenhouse made and used for?

Green house A greenhouse is

made of glass and

is used for

growing plants,

especially during

cold weather.

greenhouse effect

How does it work?The air inside is warm because

the glass traps the heat from the

sun and keeps it from escaping. This

makes the greenhouse heat up and so

the plants can grow

throughout the

cold period.

In the atmosphere surrounding the earth there are gases called “greenhouse gases”, including carbon dioxide, methane (甲烷 , 沼气 ) and water vapor.

What do you think greenhouse gases do ?Greenhouse gases perform the same function as the glass in a greenhouse: they trap the heat of the sun and keep the air surrounding the earth warm. This is called the greenhouse effect.

Reading

The Earth is Becoming Warmer—But does it Matter?

Under this greenhouse effect, what happened?

1. Skim the text and get the main idea.

A. When the “greenhouse effect” started

B. What causes the “greenhouse effect”

C. Dr. Janice Foster’s theory on the “greenhouse effect”

D. The fact that the earth is becoming warmer and

different theories about it.

2. Who wrote the magazine article? What is the name of the magazine?

Sophie Armstrong, Earth Care.

Part one:

Part two:

Part three:

Part four:

Introduce a debate over the issue of global warming. How global warming comes about.

No one knows what the effects of global warming will be.

Para. 1

Para. 2-5

Para. 7

Para. 6

Two different attitudes among scientists towards global warming.

2.Match the main idea of each paragraph

main idea of each part writing techniques

(Paragraph 1)

Introduce a debate over the

issue of global warming.

Raising a question

What is the purpose of the first paragraph?

To introduce the topic.

main idea of each part writing techniques

(Paragraphs 2-5 )

Illustrate how global

warming comes about.

Giving examples, using

graphs, explanation.

(Paragraphs 6 )

List two different attitudes

among scientists towards

global warming.

Giving examples,

making contrast.

main idea of each part writing techniques

(Paragraph 7 )

It's up to readers to think

and decide whether people

should do something about

global warming or not.

Using a question,

leaving readers to

think over the issue.

Detailed Reading1. What are the names of the three scientists mentioned in the article?

They are Dr. Janice Foster,

Charles Keeling and George Hambley.

2. What do they think about global warming?

Do they agree with one another?

They don't agree with each other.

the names of the scientists

contribution or ideas

Dr Janice FosterHe believed that people have cause the increase in the earth’s temperature through the burning of fossil fuels.and he had passive idea about global warming.

Charles KeelingHe found out the amount of carbon dioxide in the atmosphere from 1957 to 1977.

George Hambley He had a positive idea about global warming.

4. What are the two graphs about?

Graph I shows the temperature increase of one degree

Fahrenheit between 1860 to 2000.

Graph 2 is about the carbon dioxide content in the

atmosphere, 1958--1990.

5. What are the diagrams for?

To illustrate points by providing evidence.

True or false?

1.The temperature in the last century didn’t seem to increase much.

2.Everyone believes that global warming is caused by the activities of humans.

3.Janice Foster believes she can measure the future global rise in temperature.

4.The rise in carbon dioxide is causing a steady increase in global warming.

5.George Hambley believes that global warming will do good rather than harm to the earth.

6.It is clear what the effects of global warming will be.

Interview: Have you ever used plastic bags to store something in your daily life ?

Why do you use plastic bags ?

Plastic bags have been given at a cost since June 1, 2008.

1. What do you think of this news?

2. What will you use to take the place of plastic bags when shopping?

3. What are the advantages of not using plastic bags?

1.Turn off the tap when cleaning your teeth.

2. Recycle paper and glass.

3. Walk or cycle everywhere.

4. Turn off the lights when your are not in the room.

5. Get something repaired rather than buy a new one.

6. Use both sides of a sheet of paper.

7. Try not to use one-time-use box/cup/chopsticks.

8. Take a bag with you when you go shopping.

9. Use rechargeable (可充电的 ) batteries.

10. Use products that save energy.

11. Let the air-condition remain 26 .℃

In our daily life, we can do these things :

What can we do about global warming?

1.Who are the writers of the letters?

Ouyang Guang and the editor of Earth Care.

Reading

2.What’s the purpose of Ouyang Guang’s letter? To get some suggestions for what he can do about global warming.

Read Ouyang’s email and answer:

3. What are Ouyang Guang’s two concerns?

The first is that he feels that individuals can have little effect on huge environmental problems. The second is that he is not sure where to start with his project.

A. He is doing a project on global warming.B. He feels individuals can affect huge

environmental problems.C. He isn’t sure where to start with his project.D. He wants to get some suggestions from Earth Care.

4. Which is not the reason why Ouyang Guang writes the letter?

5. Does Earth Care agree with Ouyang Guang’s opinion that individuals can have little effect?

No, Earth Care doesn’t agree.

Read Earth Care’s reply and answer:

6.What suggestions does Earth Care give him?

Turn electrical appliances off when not using them.

Don’t turn up the heat, put on more clothes.

Walk or ride a bike, don’t drive.

Recycle.

Buy things made from recycled materials.

Buy products that use less energy.

Plant trees.

Talk with family and friends about global warming.

7. List Earth Care’s suggestions and tell whether you think you can carry them out.

Earth Care’s suggestions Carry out

1. Turn electrical appliances off when not using them.

2.Don’t turn up the heat, put on more clothes.

3. Walk or ride a bike, don’t drive.

4.Recycle.

5. Buy things made from recycled materials.

6. Buy products that use less energy.

7. Plant trees.

8. Talk with family and friends about global warming.

8. Which is not true according to the editor’s letter?

A. Together, individuals can make a difference to environmental problems.B. Individuals must put up with pollution.C. Many activities individuals do can produce carbon dioxide.D. Individuals can save energy to slow down global warming.

What else should our government do to slow down global warming?