资源简介

(共60张PPT)
Can you tell what we use energy for?
lamp
things that use
energy in our lives
micro-wave oven
cassette player
heating
television
hairdryer
video player
fridge
computer
washing machine
stove
Do you know where energy comes from or how energy is produced?
How many sources of energy can you list?
Wind energy is used as power to produce electricity.
windmills
Electricity is produced by burning coals.
coal power stations
Oil is refined and made pure.
oil refineries
Nuclear energy is converted into electricity.
nuclear power
plant
pieces of equipment on a roof that collects energy from sunlight in order to heat water and produce electricity
solar panels
Water are kept back and raised its level for irrigation or for producing electricity.
hydro-electric
dams
geothermal (地热的) energy plant
Electricity is generated from hot dry rocks.
lights
television
cassette player
computer
fridge
stove
washing machine
hairdryer
video recorder
coal oil
natural gas
wind(power)
sun(solar energy)
water(hydro-electric power)
the sea ( tidal energy)
uranium(nuclear energy)
plant waster(biomass energy)
Things that use energy Sources of energy




An energy source is “renewable” when supplies of it never run out and “non-renewable” when one day they will run out. What energy sources are renewable and which are non-renewable?
wind energy
renewable
solar energy
renewable
hydroelectric power
renewable
geothermal energy renewable
tidal energy
renewable
nuclear power plant
non-renewable
an oil refinery(精炼厂)
non-renewable
coal power station
non-renewable
natural gas
non-renewable
The element uranium does not occur in pure form in nature but is found in minerals such as carnotite（钒钾铀矿）, pictured above.
uranium Ore (铀矿石)
non-renewable
地热
生物量
What is the building made of and what is it used for?
It is made of glass and plants can grow in it when the weather is cold outside.
Have you ever seen a greenhouse?
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.
What are the “greenhouse gases”?
What do you think greenhouse gases do?
greenhouse effect
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.
What’s greenhouse effect?
the effect of global warming
the effect of global warming
Global warming / The warming of the earth.
Skim the text and find out the main
topic of the article.
What is the purpose of the first paragraph?
What are the diagrams for?
To illustrate points by providing evidence.
To introduce the topic.
Sophie Armstrong wrote the magazine article. The name of the magazine is “Earth care”.
2. What are the names of the three
scientists mentioned in the article?
They are Dr. Janice Foster, Charles Keeling and George Hambley.
Who wrote the magazine article? What is the name of the magazine?
Read the text quickly and answer the questions.
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?
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 1997.
Choose the best answers.
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.
B
2. “But there are some very different
attitudes among scientists towards this
issue.” “Issue” here means the same as
the one in ___. A. I bought the new stamp the day of its
issue. B. They are talking about one of the key
issues in the election campaign. C. The government is expected to issue a
statement about the election. D. The magazine has 12 issues each year.
B
3. 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.
C
The different ideas between Dr. Janice Foster & George Hambley
go up
catastrophe
very serious
positive
produce more
a greater range of animals
Dr. Janice Foster George Hambley
Carbon dioxide has caused the global temperature to _______. An increase of five degrees would be a __________ and could be ___________. More carbon dioxide is a ________ thing,
which makes crops ____________ and will encourage __________ __________________.
The temperature last century didn’t
increase 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.
True or false
T
T
F
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.
T
T
F
Construction
Part 1
(1)
Introduce a debate over the issue of global warming.
Main idea of each part
Part 2
(2-5)
How global warming comes about.
Part 3
(6)
List two different attitudes among scientists towards global warming.
Part 4
(7)
It’s up to readers to think and decide whether people should do something about global warming or not.
It has a title, a first paragraph that runs across the page and is in bold, the main text in two columns, graphs / diagrams, two quotes.
What is the structure of a magazine like this and how is the text organized?
Of the two ideas, Dr Janice Foster’s and George Hambley’s, which are you in favor of? Why?
Dr Janice Foster’s. Because we have witnessed a large number of disasters predicted by some people.
What should we do about global warming?
Try to reduce the use of motor vehicles.
Use less heat and air conditioning.
Plant trees.
Use the “Off” Switch.
Buy energy-efficient products.
Change a light bulb.
A: We shall do something about global warming.
B: We shall do nothing about global warming.
Debate
Should we do anything about global warming?
1. 据报道，在过去的十年间，北极圈内
的平均气温比以前升高了2-3摄氏度。
2. 2009年12月的哥本哈根世界气候峰会要
求各国减少温室气体排放，拯救地球。 3. 2010年新年刚开始，极度寒冷的天气袭
击了亚洲、欧洲和北美洲。恶劣的天气
正是全球变暖的后果。
就以上素材号召同学们行动起来积极应对地球变暖
Dear fellow students,
It is reported that the average temperature within the Arctic Circle has risen by 2-3 degrees Celsius in the past ten years. At the Copenhagen Climate Summit 2009 all nations were required to reduce the greenhouse gas emission to save the earth. At the beginning of 2010, extremely cold weather hit Asia, Europe, and North America, which is the evidence of
A Sample
global warming. As is known to all, our environment has been worsening due to human activity. If we don’t take effective measures now, human beings will not be able to survive in the future. If we can save energy, recycle waste and plant more trees, we can make the earth a better place. So let’s take action from now on! Let’s save the earth.
Title: The Crisis of Global Warming
Background: 全球变暖
Cause: 温室气体排放，其中大约70%为二
氧化碳
consequence : 海平面上升 自然灾害频繁
measures: 1.节约家用电器
2. 少用机动车辆
3. 植树造林
词数：120个
Global warming has become one of the biggest environmental concerns for people all over the world. With the booming of economy, the emission of the greenhouse gas, consisting of about 70% carbon dioxide, has been steadily increased, contributing greatly to the global warming. The increase in the temperature of earth has caused many harmful effects. It melts the ice caps, raising sea levels. It disturbs weather patterns, causing frequent natural disasters such as floods, droughts, severe storms, hurricanes and so on.
A Sample
Actually, it’s easy for everyone to do something to save energy and reduce the emission of greenhouse gas. For example, turn off an electrical appliance if it is not used. Walking, cycling, carpooling or using public transportation instead of using motor vehicles are all good ways to reduce the emission of carbon dioxide. We are also supposed to plant trees and preserve forests. Every individual counts and individuals together makes a big difference.

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