Unit 4
Global warming
Warming up
高二人教新课标版选修六
List
things that use energy
sources of energy
renewable / non-renewable
Things that use energy around us or at any other places:
In a house
Things that use energy Sources of energy
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)
Windmills( 风车 ), renewable
Source of energy:
A coal power station, non-renewable
An oil refinery( 精炼厂 ), non-renewable
A nuclear power plant, non-renewable
Solar panels( 太阳电池板 ), renewable
A hydro-electric dam, renewable
Geothermal ( 地热的 ) Energy Plant
Thermal( 温泉的 ) Region, Iceland
Renewable or non-renewable?
√
Renewable or non-renewable?
√
Coal Oil Natural gas Uranium
Wind (wind power) Sun (solar energy) Water (hydro-electric
power) Plant waste (biomass
energy) Hot springs or geysers
(geothermal energy) The sea (tidal energy)
Fossil fuels( 化石燃料 )
Non-renewable Renewable
Sample lists
Things that use energy
Sources of energy
Renewable / non-renewable
lightsheating
televisionvideo
recorder
cars and buses
oilcoal
natural gas
wind (wind power)
sun (solar energy)
renewable
renewable
non-renewable
non-renewable
non-renewable
fridge
stove
washing machine
hair-dryer
water( hydro-electric) renewable
plant waste (biomass energy)
renewable
hot springs (geothermal energy) renewable
the sea (tidal energy)
renewable
computer uranium (nuclear energy)
non-renewable
What is told in the picture?
What is global warming?
What cause global warming?
Greenhouse
2012
glaciers melt 冰川融化
species extinction 物种灭绝
sea level rises 海平面上升
Global warming also causes many extreme weather events.
drought
flood
typhoon
Tsunami hits Indonesia
sandstorm
Desertification
high temperature
What can we do?
Copenhagen climate change summit
carbon emission reduction
Every coin has two sides. Energy lights our cities and heats our buildings. Meanwhile, many kinds of energy sources cause pollution. How to deal with it?
renewable energy sources
solar energy
windmills
wind energy
hydro energy
geothermal energy( 地热能 )
What more things can you do?
The minimum effort is also a kind of support. 再小的力量也是一种支持。
An energy source is “renewable” when supplies of it never run out and “non-renewable” when one day they will run out.
我们称用之不竭的资源为“可更新资源”。称最终会枯竭的资源为“ 不可更新资源”。
Language points
1) run out
run out 是不及物的 , 后面不能加宾语 ,
所以没有被动。 run out of 是及物的 ,
后面必须加宾语。 如:We have run out of the ink.
= The ink has been run out of.
= The ink has run out.
2) renewable/non-renewable
可更新资源 / 不可更新资源If I can rephrase what I had just said, I
think our resource is not renewable.
如果我可以把我刚说的话重新措辞一下 ,
我变为我们的资源是不能再生的。
Homework
1. Review the new words and
expressions in this class.
2. If possible, watch the movie
2012 & write your comment.
3. Preview Reading.
Energy forms
wind powersolar powerhydropower
nuclear powerbiomassgeothermal
coalnatural gasoil
Fossil fuel
Renewable—A ;Nonrenewable—B
AAA
B
AA
化石燃料
For what purposes do we use energy?
To light our cities ;To heat our buildings ;To entertains us ( watch TV; play computer etc.) ;To run our cars and buses ;To cook meals ;
It is the use of energy that can make our life enjoyable and entertaining
negative effects of using energy
Increasing CO2 pollution
green house effect
A greenhouse
is made of glass
and is used for
growing plants,
especially during
cold weather.
What is a greenhouse made of and used for?
Picture Picture readingreading
traps the heat from the
sunkeeps it from
escapingheat up
A greenhouse
How does it work?
Picture Picture readingreading “greenhouse gases”What do you think “greenhouse
gases” do?
Dr. Janice Foster thinks the effects of global warming could be very serious.
George Hambley thinks global warming will be mild with few bad environmental consequences.
They don't agree with each other. They don't agree with each other.
ReadingReadingWhat do they think about global warming? Do they agree with one another?
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 ____________________.
go up
catastrophe
very serious
positive
produce
a greater range of animals
The different ideas between Dr. Janice Foster & George Hambley
1. cause the sea level to rise
2. severe storms3. droughts4. famines5. the spread of
diseases6. destruction of
species
Positive effects
Negative effects
1. cause the sea level to rise
2. severe storms3. droughts4. famines5. the spread of
diseases6. destruction of
species
Positive effects
Negative effects
1. make plants grow faster
2. crops will produce more
3. a greater range of animals
4. make life better
Idea-sharingIdea-sharing
What will global
warming bring to us
in your opinion?
Shall we do something
about global warming?
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