unit4 earthquake Warming up

Unit4EarthquakeWarmingup高一人教新课标版必修一Howmanykindsofdisastersarethereintheworld?Differentkindsofnaturaldisastersvolcano火山flood洪水drought旱灾snowstorm雪灾avalanche雪崩；山崩tornado/twister龙卷风；飓风typhoon台风hurricane飓风hail冰雹fire火灾famine饥荒sandstorm沙尘暴mudflow泥石流Tsunami海啸thunderstorm雷暴fireNaturalDisastersDroughtfloodtyphoonhurricanesnowslide(雪崩)volcano(火山)mudflowsandstormTsunami(海啸）earthquakeWhichdisastermaycausetheworstdamage?EarthquakeOnMay12th,200814:28AbigearthquakehappenedinWenChuanSiChuan!Doyouknowwhyanearthquakehappens?SanFranciscoPacificplateAmericanplateEurasianplateIndiaplateAfricanplateAntarcticplateParagraph4•PacificplateNorthSouthWestEastAmericanplateEarthquakeHappensManypeoplebelievethat“itisalwayscalmbeforeastorm,”lookcarefullyatthetwophotos.Now,imaginetherehasbeenabigearthquake.Describewhatmighthappentotheobjectsinthephotos.TangshanSanFranciscoTangshan,HebeiJuly28th,19761906年,旧金山地震后街景1906年,地震后旧金山市区被扭曲的电车轨道Buildingswillfalldown.Whatwouldhappenduringanearthquake?Roadswerecracked.Peoplewereinjured.waterpipescrackandburstAwholecitywillbeinruinsWhatdoyouthinkmayhappenbeforeanearthquake?weather:strongwind,heavyrain/brightlightintheskyAnimalswillbecomenervous.Waterinriversandwellsrises/falls.cracksinthewalls1.Theanimalsweretoonervoustoeat2.Miceranoutofthefields3.Fishjumpedoutofbowlsandponds4.Thewaterinthewellroseandfell5.BrightlightappearedintheskyWhatshallwedotokeepussafeifanearthquakehappens?DiscussiondropontothegroundkeepawayfromthepowerlinesWaysonself-rescuekeepawayfromthesignskeepawayfromthebuildingshideunderthefurnituredropontothegroundholdontothefurniturehideinthecornerofthehouse