高中Unit 4 Natural disasters优秀ppt课件

这是一份高中Unit 4 Natural disasters优秀ppt课件，共23页。PPT课件主要包含了tsunami，landslide，snowslide，tornado，wildfire，earthquake，drought，flood，Research，Organize等内容，欢迎下载使用。

T discuss the natural disasters yu knw.T learn steps f preparing fr a presentatin n natural disasters.T give a presentatin n natural disasters t yur class.T be able t describe the prcess f a disaster by watching the vide.
What kind f natural disasters can yu think f?
typhn\ hurricane
vlcanic eruptin
lightningthunder
Wrk in grups f three r fur. Chse ne f the natural disasters abve and brainstrm answers t the questins.
Understanding the disaster
Are there any knwn causes f the disaster?What can be dne t prevent it? Wildfires are usually caused by human and natural factrs (lightning, etc.). Frest managers shuld be hired t prtect the frest and peple shuld be educated abut preventin f frest fires. Earthquakes are caused by tectnic plates shifting.
What are the pssible effects f the disaster?What can be dne t prepare fr it? Check yur hme fr areas that may be weaker in an earthquake. Als lk at yur things; fr example, furniture such as a wardrbe which is nt attached t a wall may fall easily, and glass n a high shelf culd be dangerus. Als find the safest area t.
Preparing fr the disaster
Keep sme supplies at hme, such as fd and water, a trch, radi and first-aid kit, as an earthquake can affect access t basic things. Always have a plan, and practice fr what yu will d when there is an earthquake. Sme knwledge f basic medical prcedures may als be very useful.
In the event f a disaster
What can yu d t stay safe during the disaster?What kind f help d survivrs need? Dn’t panic! Remember yur plan and fllw it calmly. Take cver in the safest area, perhaps under a strng dr frame r table. Use yur supplies and stay in cntact with thers s they knw yu are OK. Keep an eye n and help the vulnerable, such as ld peple, yung children and pets.
Which questins d yu nt knw the answers t?Which nes d yu need mre infrmatin n?Use the Internet r yur schl library t find ut mre.
Put tgether a presentatin using the infrmatin yu have gathered. Use the tips t help yu.
Start yur presentatin with a “hk” (a stry r fact t catch the attentin f yur listeners). On Mnday, 5 December 20XX, 600 peple disappeared when…Reduce yur ideas t three main pints t help listeners remember what yu say. S always remember t drp, cver, and hld n…Prepare visual aids fr yur presentatin (phts, charts, tables, etc.).
In 2016 in Alberta, Canada, a wildfire destryed ver 2,000 huses and became ne f the mst expensive natural disasters in Canada’s histry. Wildfires are caused when frests are left t grw and get t dry. They can becme dry when there is a drught r when there is nt enugh snw t keep them wet. Then a persn wh might be hiking r camping can start a fire r lightning can strike a tree which als causes a fire.
Because the frest is dry, ther trees quickly catch fire. Wildfires can spread very quickly and many peple, including firefighters, are caught by surprise when a fire races ver a hill twards them. The best way t prevent a wildfire destrying yur life is t pay clse attentin t the news and be ready t evacuate very quickly if authrities say it’s time. A huse r car can be replaced, but lives are far mre precius.
Give a grup presentatin t yur class.
Thusands f peple in Nrthern Califrnia were tld t leave their hmes in Nvember 2018 because f spreading wildfires. Officials said the fire started as a result f lightning strikes. This is just ne f the many wildfires that happened in 2018. Then hw much d yu knw abut wildfires?
What shuld we d when a wildfire begin? We shuld first infrm peple nearby and evacuate them t safe places. We shuld stay calm and mve t safe places as sn as pssible. After the wildfire, we shuld prvide survivrs shelters t rest and medical help fr the injured.
shw time : Wh is the best reprter ?
Self-assessment: Grade yur wn reprt
1. Chse a natural disaster that interests yu the mst.2. Gather infrmatin abut it (the cause, the effect, the safety instructins...).3. Make a pster t intrduce the disaster.