外研版 (2019)必修 第二册Unit 6 Earth first获奖课件ppt

这是一份外研版 (2019)必修 第二册Unit 6 Earth first获奖课件ppt，共32页。PPT课件主要包含了 million， billion等内容，欢迎下载使用。

Unit 6 Earth first
T think abut sme envirnmental prblems we are facing.T express yur ideas n hw these envirnmental prblems arise by watching a vide and lking at sme pictures.T discuss with classmates n hw t prtect the earth.
List the tp 10 envirnmental prblems.Climate Change.（气候变化。）Energy.（能源。）Water.（水。）Bidiversity and Land Use.（生物多样性和土地使用。）Chemicals, Txics and Heavy Metals. (化学特制、有毒物质及重金属)Air Pllutin.（空气污染。）Waste Management.（废物管理。）
Ozne Layer Depletin. （臭氧层损耗。）Oceans and fisheries.（海洋和渔业。）Defrestatin.（采伐森林。）
When it cmes t the earth, what's yur first impressin? Have yu nticed sme serius prblems the earth is suffering frm?
Hw much d yu knw abut the serius situatin humans faces? Watch the vide and answer the questins.
2. What des the vide want t tell us?
Severe envirnmental prblems we are facing nwadays make ur future uncertain. It's time fr everyne t take actin nw and make ur planet a greener and safer place fr ur future generatins.
1. Which f the facts in the vide d yu find mst alarming?
Any reasnable idea is accepted.
Listen and cmplete the missing numbers._______ square kilmeters f frest disappear every yeararund _______ trees are cut dwn each day just t make tilet papereach day, arund _______ t _______ species f plants and animals becme extinct -nearly _______ times the natural rate f extinctin
ver ________ animals are killed by cean pllutin each year_______ peple dn't have clean drinking watera plastic bttle can take ______ years t break dwnthe ice caps are mre than ______ thinner than they were ______ years ag
Discuss what majr envirnmental prblems we are facing currently.
1. Pllutin: water pllutin, air pllutin, sil pllutin, etc.2. Glbal warming. 3. Climate change.4. Overppulatin. 5. Waste dispsal.6. Lss f bidiversity. 7. Defrestatin.
water pllutin
air pllutin
plastic pllutin
glbal warming
waste dispsal
sil pllutin
verppulatin
defrestatin
Lk at the cartns n page 61 and answer the questins.
1. What envirnmental prblem des each cartn refer t?
Water pllutin; defrestatin; air pllutin; glbal warming
2. What are the causes f these prblems?
Use fllwing expressins t help yu:ignre, cause/lead t/result in, peple's awareness f envirnmental prtectin, fssil fuel burning...
3. What d yu think is the mst serius envirnmental prblem we face tday? What shuld be dne t help slve it?
Use fllwing expressins t help yu:invest, recycle, carpling, classificatin f waste, green/clean energy...
Chse ne f the mst serius envirnmental prblems and discuss in grups t analyze the causes and think abut pssible slutins.air pllutinCause: the burning f fssil fuels, agricultural activities, exhaust frm factries and industries, mining peratins, indr air pllutin
Pssible slutins:taking public transprtatin;cnserving energy;understanding the cncept f Reduce, Reuse and Recycle;emphasis n clean energy resurces; using energy efficient devices;...
Hw abut plastic pllutin?Packaging wastePlastic has revlutinized the way we package gds and safely cnsume fd. But packaging accunts fr mre than 35% f plastic wrldwide.
Sutheast Asia has seen an explsin f plastic packaging waste, which increasing the risk f plluting rivers and seas.Mst plastic packaging is single use. Recycling rates are extremely lw - less than 9% glbally. If nthing changes, 26 billin tnes f plastics will be prduced ver the next 30 years.
Slutins:Cntrls n industry fr plastic packaging prductin.Inventins and investment in bidegradable (生物可降解的) r reusable packaging.Gvernment targets t restrict plastic packaging and prmte recycling.What’s yur slutin?
If we d nt change ur ways, we are at risk f ruining ur planet and destrying many mre plants and animals. All f these things will be gne. And we will be gne, t.Time is running ut. Our planet needs ur help.It's up t us t decide tgether what happens next.
Make a survey abut water pllutin arund yu, then write a shrt reprt in 70 wrds, including existing prblems, causes, damage, pssible slutins.