人教版 (新课标)必修1&2必修1Unit 4 Earthquakes图片ppt课件

这是一份人教版 (新课标)必修1&2必修1Unit 4 Earthquakes图片ppt课件，共60页。PPT课件主要包含了 Group One， Group Two，DROUGHT，泥石流，Group Five，Tornado，End， Group Six，Tsunami等内容，欢迎下载使用。
Revisin
What new infrmatin abut earthquakes have yu learned nw?What wrds and expressins can yu use t describe an earthquake?
Requirements fr the presentatin
1. Tell us smething abut the natural disaster2. Tell us hw t help thers as well as hw t help urselves in case the natural disaster happens

Here are sme phts!
As yu can see,
The flds are very terrible, they make many peple lse their hmes, families and many valuable things.
What shuld we d?
Catch sme strng things. Use the flaters.Take a deep breath ,then dive int the water . (If yu can swim)Try t swim dwnstream. (顺流而下 )
Here is the lve!
Tw sldiers were trying t take the baby t a safe place. N matter hw tired they were, they still saved the baby.
Save Lives!
These years , many cities in China are attacked by the flds. Smetimes it happened during the days, but smetimes it happened at night. We shuld always be prepared t d smething.
Thanks fr listening!
Made by : Eva Glria Brenda Chpin
Lk at sme pictures first
Cause f drught
Large increase in ppulatin, leading t less and less water.Human activities caused heavy water pllutin, reduced the available water resurces.There is a lt f water that is wasted in watering crps.
There are fewer crps and animal cubs can be prduced. S farmers can’t get enugh mney even they can’t prvide fd fr their families. It can als cause desertificatin.
Dangers f drught
◆cubs：（动物）幼崽 ◆ desertificatin：沙漠化
At present, the fastest and the best way t slve the prblem f drught is t green the hmes. T grw mre plants, reduce water lsses and waste and reduce water evapratin.
◆ green：绿化 ◆ reduce：减少 ◆ evapratin：蒸发
Hw t prevent the drught
If everybdy change and pick this beneficial life style, the Earth then may decrease temperature immediately, and may als reduce climate disasters immediately such as fld, rainstrm, drught and s n
◆ beneficial：有益的◆ decrease：降低 ◆climate：气候
Grup Three
Made by Grunp Three
PicturesNew wrdsThe definitin f landslideFirst aid methd
Slpes 倾斜Ravine 冲沟Saturate 饱和的Rle 作用Gravity 严肃Initiatin 发起Trrent 奔流
Characterize刻划性格Duratin 持续 Temprary 暂时的 Fercius 凶猛的Massive 大而重的Destructive 破坏性的Frce 力量
The Definitin f Landslide
Slpes r lse debris in the ravine was heavy rain r snw n the matter, the glacier water saturated, in the rle f gravity, the flw alng the slpes r the initiatin f a particular trrent. Is characterized by sudden nset, duratin temprary, fercius and massive destructive frce.
First Aid Methd(1)
Cawn dwn,dn’t be panic.Lk fr safe place arund yu at nce.When yu feel yu can’t run away,hld n the trees r smething fixed(固定的)。If yu are sure yu are safe,yu can help thers t survive.
First Aid Methd(2)
Take care f everything may be dangerus in yur way,like falling stnes and s n.Dn’t g back t the disaster-hit area until it’s sure there wn’t be any mre landslide happen.Sleep away frm rck and large amunts f debris slpes belw.
That's all.
[Intrductin]Sand duststrm(沙尘暴）：sandstrm(沙暴）+duststrm(尘暴）Visibility 能见度
Atmspheric circulatin大气环流
The Sahara desert
Thanks fr listening
vide frequency
HELP! HELP!
Sme shcking phtes…
What is tsunami?
Tsunami is a Japanese wrd that means "sea wave". A tsunami is a huge sea wave that frms mainly in the Pacific Ocean area. Peple die and prperty is destryed when a tsunami hits land. What causes these dangerus sea waves? Smetimes, tsunamis are caused when earthquakes take place underwater. Then, water begins t mve up and dwn frm the tp f the cean right dwn t the bttm. Waves begin t frm, and each wave is called a tsunami.
Just like this…
Mre specific…
HOW TO PREPARE YOUR BUSINESS FOR THE NEXT Tsunami
A Guide fr Businesses in the Hawaiian Islands
The natural warning signs f a tsunami
Yu shuld familiarize yurself with the natural warning signs f a tsunami: An earthquake Water receding Water surging inland A strange sund cming frm ut t sea (survivrs say the sund is like a lud rar) An earthquake may nt be yur first warning sign f an impending tsunami, s if any f the ther signs are present yu shuld exercise cautin and mve inland and uphill immediately.
‐Prepare fr an earthquake. As a large earthquake may be phase ne f a tsunami event, yu shuld prepare fr an earthquake while preparing fr a tsunami. Walk thrugh yur business and take measures t ensure that falling debris will be kept t minimum. ‐Knw hw t ‘shut dwn’. Secndary disasters such as fire can be caused as a result f an event such as an earthquake. When develping an evacuatin plan knw hw t shut everything dwn (gas, water, electricity) s that yu d nt increase the risk t yur prperty frm these ptential hazards. ‐Create and maintain an evacuatin Kit. These can be useful in any emergency situatin.
Remember----Take Care f Yurself – Take Care f Others
The mst imprtant thing t remember when preparing fr a tsunami, r indeed any hazard, is that yu, and nly yu, are respnsible fr yur wn persnal safety.. If yu experience any f the natural warning signs f a tsunami, r yu hear a siren r annuncement t evacuate, then evacuate immediately; d nt fall int the ‘wait and see’ grup. If yu live utside f the tsunami evacuatin zne but have friends in the evacuatin zne, set up a plan ahead f time t hst them at yur safe lcatin until the all‐clear is given.
Yu shuld knw…
“If yu have prepared yur business fr the next tsunami, yu have a better chance f recvering than a business that has nt.”S,please take care f tsunami,the terrible natural disaster.And try yur best t save yur life when it happens t yu—-YOU SHOULD VALUE YOUR LIFE!
Self-assessment
Opinin/Idea
Usefulexpressins used
Infrmatinfund
Prnunciatin
Discussin
Which grup impressed yu mst? And why?
Teacher’s cmments
Cnslidatin and Hmewrk