高中人教版 (2019)Unit 3 Environmental Protection优质课ppt课件

这是一份高中人教版 (2019)Unit 3 Environmental Protection优质课ppt课件，文件包含人教版高中英语选修三Unit3EnvironmentalProtection阅读课件pptx、videomp4等2份课件配套教学资源，其中PPT共19页， 欢迎下载使用。
1. What can yu see in the picture?2.What is the cause f this phenmenn?
A large piece f ice is breaking ff a glacier.
Glbal warming
What ther cnsequences f the glbal warming ?
ecnmic lsses
the rise f sea level
dying animals
natural disasters
extreme weather
castal citiessubmerged
Lk at the graph. What is it abut? What infrmatin can yu get frm it?What can yu see in the pht? What might be the stry behind it?
The temperature f the glbal surface rse abut 1.2 ℃ frm 1920 t 2016. The earth is becming warmer and warmer.
What effects may be caused by the glbal warming?
skin and bnes 瘦得皮包骨
The plar bear (北极熊) may died fr lacking fd.
Befre-reading
While-reading
1. What is the type f this passage? A. Argumentative writing议论文 B. Narrative writing叙述文 C. Expsitry writing说明文 D. Advertising writing广告2. In which part f a newspaper r magazine may we find this passage? A. Entertainment B. Ecnmy C. Educatin D. Envirnment
Match the main idea with each part.
Cnsequences
Reading fr the details (Para.1)
a warming cean & atmsphere
melting ice
rising sea level
Climate’s is getting warmer and warmer
Reading fr the details(Para.2)
climate change
lnger fd-seeking travel
lw sea-ice level
The fllwing reasns accunt fr the death f the plar bear, with ne influencing anther. Read paragraph 2 and put them in a crrect lgical rder.
What is the rt cause?
Reading fr the details (Para.3: cause)
Heat frm the sun enters the __________ and warms Earth’s __________ as _________-wave radiatin.
Keeping Earth’s warm and_____________
Peple prduce huge amunts f_________ greenhuse gases by burning_____________.
A big prblem
Mre ________ energy is trapped in the atmsphere and causes Earth’s surface temperature t ________ quickly.
fssil fuels
Greenhuse Effect
Greenhuse effect
“Natural” greenhuse effect
“man-made” greenhuse effect
Reading fr the details (Para.4: cnsequence)
1. What are the cnsequences f the glbal temperature rise? 2. Why did the authr mentin the climate scientists’ warning?
The rise in the temperature
extreme weather & natural disasters
extreme rainstrms, heatwaves
serius damage, csting human lives
Because glbal warming needs everyne’s attentin and it is essential that we take apprpriate actins.
Reading fr the details (Para.5: slutins)
1.What examples f extreme weather and disasters d yu knw? Make a list f them.2. D yu think it is human activity that caused glbal climate change? Give yur reasns?
Tsunami(海啸） fld（洪水） landslide（滑坡） sandstrm（沙尘暴） thunderstrm（雷雨） earthquake hail（冰雹） heatwave（热浪） cld wave（寒潮）typhn（台风） trnad(龙卷风).
Yes. Human beings burn t much fssil fuels and prduce large quantities f carbn dixide, causing the temperature t g up steadily .
Less tissue, regain handkerchief
frest prtectin
Turn ff light, switch, pull the plug if nt use.
plant trees
Hw d we live a lw-carbn lifestyle?
walk r cycle t wrk
What is causing the increase in the glbal average surface temperature? Climate scientists ften mentin a key climate prcess 1_______ (call) the “greenhuse effect”, which has tw cmmn meanings: the “natural” greenhuse effect and the “man-made” greenhuse effect. The “natural” greenhuse effect refers t the fact 2______ heat frm the sun enters the atmsphere and warms Earth’s surface as shrt-wave radiatin. The heat 3____________(release) back int space at lnger wave lengths. Greenhuse gases in the atmsphere, such as methane and carbn dixide, trap sme f the heat, keeping Earth’s climate warm and habitable. 4__________ this prcess, Earth culd nt sustain life. Hwever, the “man-made” greenhuse effect has nw becme 5___ big prblem.
is released
When peple prduce huge amunts f extra greenhuse gases by burning fssil fuels, mre heat energy is trapped in the atmsphere and causes Earth’s surface temperature 6_________(rise) quickly. There is strng and cmprehensive evidence that the rise in temperature 7_________(lead) t an increase in extreme weather and natural disasters wrldwide, nt nly causing serius damage, but als csting human lives. Climate 8 ___________(scientist) have warned that if we d nt take apprpriate actins, this warming trend will prbably cntinue and there will be a 9________ (high) price t pay. In fact, news reprts are 10___________(frequent) bradcast abut extreme rainstrms and heatwaves causing deaths and ecnmic lsses.