Janice Foster
Scientists
Opinion
Janice Foster ◆ Over the next 100 years the amount of warming could be as low as 1 to 1.5 degrees Celsius, but it could be as high as 5 degrees Celsius. ◆ An increase of five degrees would be a catastrophe ___________.
fridge stove
water (hydro-electric) plant waste (biomass energy) hot springs or geysers (geothermal energy) the sea (tidal energy)
renewable renewable
washing machine
• 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.
(Paragraph 6)
It’s up to readers to think and Using a question, leaving decide whether people should readers to think over the do something about global warming or not. issue.
3. We can replace fossil fuels with cleaner sources of energy. Disagree 4. Nuclear power is a good source of energy. Disagree
1. We should stop depending on fossil fuels for our energy. 2. 90% of our energy comes from fossil fuels. 3. We can replace fossil fuels with cleaner sources of energy. 4. Nuclear power is a good source of energy.
• What do you think greenhouse gases do? They trap the heat of the sun and keep the air surrounding the earth warm.
Main ideas of each part
Writing techniques
an oil refinery
a nuclear power plant
solar panels
hydro-electric dam
Li Bin is interviewing Professor Keeling about using different sources of energy. Read the statements below and tick the ones you agree with.
Fossil fuels
Wind power
• clean • not practical: need huge areas of land to provide enough energy
Energy from the • clean • not very practical with present sun
What is told in the picture?
Sample lists
Things that use energy Sources of energy Renewable / non-renewable
light
heating
coal
oil
non-renewable
non-renewable
Giving examples, using
graphs, explanation.
warming comes about.
(Paragraphs 4---5)
List two different attitudes Giving examples, among scientists towards making contrast. global warming.
technology
Nuclear power
• does not produce carbon dioxide • dangerous
• 3. Listen to Part 2 and then list three things we can do to save energy.
First we must try to find ways to use fossil fuels that does not put carbon dioxide into the air. Second we must produce products that are economical with energy. Third we must ask people to cut down on the energy they use.
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Unit 4
Global warming
Speaking and Listening
From the following pictures, you will know where all this energy comes from.
windmills
a coal power station
television
natural gas
non-renewable renewable renewable non-renewable
cassette player wind (wind power) video recorder sun (solar energy) computer uranium (nuclear energy)
Scientists George Hambley
Opinions ◆ Believes that we shouldn’t worry about __________ high levels of carbon dioxide in the air. ◆ Predicts that any warming will be mild with consequences few bad environmental ____________. States that more carbon dioxide is actually ◆ ______ a ________ positive thing, which will make life for human beings better.
(Paragraph 1)
Introduce a debate over the issue of global warming. Raising a question
Main ideas of each part
(Paragraphs 2---3) Illustrate how global
Writing techniques
II. Choose the best answer. 1. The first graph in the text is used to ________. A. attract readers’ attention B. introduce the topic of global warming C. act as an example D. support the opinion and make it more convincing
1. Listen to Part 1 and decide which statements
Professor Keeling does NOT agree with.
1. We should stop depending on fossil fuels for Agree our energy. 2. 90% of our energy comes from fossil fuels. Agree
community. That means _________ developed and developing countries will have to work __________ together.
developing LI BIN: But it’s not the __________ countries that
I. Read the text carefully and fill in the blanks. Scientists Opinion gases like carbon dioxide, ◆ We need ______ methane and water vapour, but if we add huge ___________ quantities of extra carbon dioxide to the atmosphere by burning fossil fuels, it will cause the ________________ global temperature to go up.