资源简介

(共32张PPT)
Earth provides enough to satisfy every man’s needs, but not every man’s greed.
Video time
1. What are the extreme weather and disasters mentioned in the video
2. What do you think causes such extreme weather and disasters
drought[dra t]
flood[fl d]
Storm（st m）
sea level rise
heat wave
[hi t we v]
fire
Global warming
Climate change
2. What do you think causes such extreme weather and disasters
Earth provides enough to satisfy every man’s needs, but not every man’s greed.
— Mohandas K. Gandhi
地球能满足人类的需要，
但满足不了人类的贪婪。
[ s t sfa ]
[ɡri d]
Look at the graph. What is it about What information can you get from it
What can you see in the photo
What might be the story behind it
The temperature of the global surface rose about 1.2 ℃ from 1920 to 2016. The earth is becoming warmer and warmer.
What effects may be caused by the global warming
Before-writing
skin and bones /b nz/
瘦得皮包骨
The polar bear (北极熊) may died for lacking food.
While-reading: read for the text type
1. What is the type of this passage
A. Argumentative writing议论文
B. Narrative writing叙述文
C. Expository writing说明文
D. Advertising writing广告
2. In which part of a newspaper or
magazine may we find this passage
A. Entertainment B. Economy
C. Education D. Environment
While-reading: read for the structure and main idea
Part 1:
(para.1-2 )
Part 2:
(para. 3)
Part 3:
(para. 4)
Part 4:
(para. 5)
The evidence(证据) of dramatic climate change that had an impact on Earth’s ecology
The causes(原因) of the increase in the global average surface temperature
The consequences(结果) of the rise in temperature
The solutions(解决方法) to reducing greenhouse gas emissions
Match the main idea with each part.
While-reading: read for the structure and main idea
Evidence
Cause
Consequences
Solutions
We have known about climate change for decades. There is little doubt that Earth is getting warmer and warmer (see the graph). A warming ocean and atmosphere along with melting ice and rising sea levels provide evidence of a dramatic change in the global climate.
Para1
What evidence of climate change can you find in the first paragraph
Evidence one:
_____________________________________
Evidence two:
_____________________________________
Evidence three:
_____________________________________
a warming ocean and atmosphere
melting ice
rising sea level
In 2013, a lot of people were shocked by a news photo of a dead polar bear that was found on Norway's Arctic island of Svalbard. According to the scientists who found its dead body, all that remained of the polar bear was "skin and bones". An expert who has studied polar bears for many years said that from the position of its dead body, the bear appeared to have starved and died. Experts claimed that low sea-ice levels caused by climate change meant the bear could not hunt seals as before, so it had to travel greater distances in order to find food. This alarming case showed how the increase in temperature had an impact on Earth's ecology.
Para2
While-reading: read for the details
Paragraph 2 introduces an example of the increase in temperature that had an impact on Earth’s ecology. Read it and fill in the table.
Part 1 (para1-2): The evidence证据
Then what is causing the increase in the global average surface temperature Climate scientists often mention a key climate process called the "greenhouse effect", which has two common meanings: the"natural" greenhouse effect and the "man-made" greenhouse effect. The "natural" greenhouse effect refers to the fact that heat from the sun enters the atmosphere and warms Earth's surface as short-wave radiation. The heat is released back into space at longer wave lengths. Greenhouse gases in the atmosphere, such as methane and carbon dioxide, trap some of the heat, keeping Earth's climate warm and habitable. Without this process, Earth could not sustain life. However, the "man-made" greenhouse effect has now become a big problem. When people produce huge amounts of extra greenhouse gases by burning fossil fuels, more heat energy is trapped in the atmosphere and causes Earth's surface temperature to rise quickly.
Para3
What is causing the increase in the global average surface temperature
While-reading: read for the details
What is causing the increase in the global average surface temperature
Part 2 (para3): The cause原因
Greenhouse effect
_________
greenhouse effect
____________
greenhouse effect
Definition(定义):
Function(作用):
“Natural”
“Man-made”
Definition:
A big problem:
While-reading: read for the details
Part 2 (para3): The cause
Greenhouse effect
“Natural” greenhouse effect
“man-made” greenhouse effect
There is strong and comprehensive evidence that the rise in temperature has led to an increase in extreme weather and natural disasters worldwide, not only causing serious damage, but also costing human lives. Climate scientists have warned that if we do not take appropriate actions, this warming trend will probably continue and there will be a higher price to pay. In fact, news reports are frequently broadcast about extreme rainstorms and heatwaves causing deaths and economic losses.
Para4
The rise in temperature
led to
example
results
serious damage,
costing human lives,
economic losses
extreme weather/ natural disasters
extreme rainstorms, heat waves
The consequence结果What are the consequences of global temperature rise
Continued greenhouse gas emissions will result in further warming and long-lasting changes to the global climate. This requires the attention of people all over the world. Governments need to consider making policies and taking appropriate actions and measures to reduce greenhouse gas emissions. We as individuals can also reduce our "carbon footprint" by restricting the amount of carbon dioxide our lifestyles produce. It is our responsibility to seize every opportunity to educate everyone about global warming, along with its causes and impacts, because this is the most serious issue affecting all of us on this planet. So what will you do to help
Para5
What are the solutions we can do
The solutions解决方法
While-reading: read for the details
Part 4 (para5): The solutions解决方法
What are the solutions we can do
What is a question left at the end
What is causing the increase in the global average surface temperature Climate scientists often mention a key climate process 1_______ (call) the “greenhouse effect”, which has two common meanings: the “natural” greenhouse effect and the “man-made” greenhouse effect. The “natural” greenhouse effect refers to the fact 2______ heat from the sun enters the atmosphere and warms Earth’s surface as short-wave radiation. The heat 3____________(release) back into space at longer wave lengths. Greenhouse gases in the atmosphere, such as methane and carbon dioxide, trap some of the heat, keeping Earth’s climate warm and habitable. 4__________ this process, Earth could not sustain life. However, the “man-made” greenhouse effect has now become 5___ big problem.
called
that
is released
Without
a
Retelling
When people produce huge amounts of extra greenhouse gases by burning fossil fuels, more heat energy is trapped in the atmosphere and causes Earth’s surface temperature 6_________(rise) quickly.
There is strong and comprehensive evidence that the rise in temperature 7_________(lead) to an increase in extreme weather and natural disasters worldwide, not only causing serious damage, but also costing human lives. Climate 8 ___________(scientist) have warned that if we do not take appropriate actions, this warming trend will probably continue and there will be a 9________ (high) price to pay. In fact, news reports are 10___________(frequent) broadcast about extreme rainstorms and heatwaves causing deaths and economic losses.
frequently
has led
scientists
higher
to rise
Retelling
Thinking
What is the author’s purpose
The author’s purpose is to arouse our awareness of the problem of the rising temperature and appeal to us to take appropriate actions to deal with climate change.
Group discussion
As a student, what can we do to protect the environment in our daily life
Follow garbage sorting rules
Turn off the lights and fans when leaving
Plant more trees
Take the stairs instead of elevator
Don't litter
Go to school by bike instead of by car/bus
Use handkerchief instead of facial tissue
Use basket or environmental basket bag instead of plastic bag
Climate change
Evidence
Solutions
Causes
Effects
government
individuals
extreme weather
natural disasters
Greenhouse effect
natural greenhouse effect
man-made greenhouse effect
A better understanding of climate change
Summary
Thank You

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