Unit-4-Astronomy-Warming教学讲解课件

WelcomeWelcome1Unit4Astronomy:Warmingup,Pre-readingandReadingUnit4Astronomy:Warmingup2Asweknow,inoursolarsystemeightplanetscirclearoundthesun.Whatarethey?

Warming-upAsweknow,inoursolarWarmi3Unit-4-Astronomy-Warming教学讲解课件4Mercury

Venus

EarthMarsJupiterSaturnUranusNeptuneMercuryVenusEarthMarsJupiter5EarthCommonItisoneoftheplanetsinthesolarsystemlikeothers.EarthCommonItisoneofthepl6Whyistheearthspecial?Becauseitistheonlyplanetonwhichlifeexists.Whyistheearthspecial?Becau7ShellfishandotherfishShellfishandotherfish8PlantsPlants9InsectsInsects10AmphibiansAmphibians11ReptilesReptiles12MammalsMammals13AnimalswithfourlegsandfeetAnimalswithfourlegsandfee14HumansHumans15Weallliveontheearth,butdoyouknowhowlifebeganontheearth?Pre-readingWeallliveontheearth,but16

InChineseculture…____________separates(分)theskyfromtheearth.Pangu盘古skyearthInChineseculture…________17_____________madehumanbeings.Nǚwa(女娲)_____________madehumanbeing18God(上帝)Inwesterncountries:

______________created

theworldandall

livingthings.God(上帝)Inwesterncountries:19HowLifeBeganOnTheEarthReadingHowLifeBeganOnTheEarthRea20Readthepassagequicklyandmatcheachparagraphwithitsmainidea.Para.1TheformationoftheearthPara.2AwidelyacceptedtheoryabouttheformationoftheuniversePara.3

TheimportanceofwaterforlifePara.4ThearrivalofhumansandtheirimpactontheearthPara.5ThedevelopmentofplantsandanimalsontheearthSkimmingReadthepassagequicklyand21Puttheeventsintoatimeline.

Insectsandamphibiansappeared.Dinosaursappeared.Theearthbecameasolidball.Smallplantsgrewontheearth.Reptilesappeared.Plantsbegantogrowondryland.Theearthwasacloudofdust.Waterappearedontheearth.Shellfishandotherfishappeared.Theuniversebeganwitha“BigBang”.Cleveranimalswithhandsandfeetappeared.Mammalsappeared.Keys:107384615212911ScanningPuttheeventsintoatimeline22Fillintheblankswiththeproperwords.Afterthe_________,theearthwasacloudof_________.Laterthedustbegantocombineinto____________.Andthenit________loudlywithfireandrock,whichwereintimeto_______carbon,nitrogen,watervapor,dioxideandothergaseswhichweretomaketheearth’s___________.Astheearth_______down,_____beganto_______onitssurface.Waterhad____________fromplanetsorsatellites,butit_________ontheearth.Thatmadeitpossibleforlifetobeginto________.dustexplodedproducecooledappear

disappearedremaineddevelop“BigBang”asolidglobe

atmospherewaterCarefulreadingFillintheblankswiththepr23GlobalwarmingGlobalwarming24Theeffectsofglobalwarming2.Risingsealevelswillleadtocoastalflooding.5.Manyplantsandanimalspecieswilllosetheirhabitatsanddieout.3.Moreandmorenaturaldisasters,likedrought,flood,typhoon,ect.1.Glaciersandiceintwopoleswillmelt.

4.Foodproductionwillreduce.Theeffectsofglobalwarming225Solutionstoglobalwarming1.

Reducecarbondioxidepollutionbyusinglessnaturalresources,likegas,coalandoil.Increasetheuseofrenewableenergysources

suchaswind,waterandsun.

3.

Plantmoretreesandprotectthreatenedforests4.

Newlawsshouldbemadetostoppollutingtheenvironment.Solutionstoglobalwarming1.

26ProtectourearthProtectourhomelandProtectou