新人教必修三-Unit-4-Astronomy-Reading課件

ReadingHOWLIFEBEGANONTHEEARTH海王星Saturn水星Uranus金星Venus地球Earth火星Mars木星Mercury土星Jupiter天王星NeptuneAQuizGame

1.Howoldistheearth?

A.About3.5billionyearsB.About4.5billionyearsC.About5.5billionyearsD.About6.5billionyears

2.______oftheearthsurfaceiscoveredbywater.A.20%B.30%C.50%D.70%3.HowmanyplanetsarethereintheSolarSystem?

A.6B.7C.8D.9

4.Whatisthetotalpopulationofhumansontheearth?

A.About3.5billionB.About4.5billionC.About5.5billionD.About6.5billion5.Howlongdoestherotation(自轉(zhuǎn))oftheearthtake?

A.12hoursB.24hoursC.amonthD.365days6.Whichcontinentisthesmallest?

A.AfricaB.NorthAmericaC.SouthAmericaD.Oceania7.OnwhatdayistheEarthdaycelebrated?

A.April22B.May4C.August21D.November118.Whichoceanisthelargest?

A.ThePacificOceanB.TheArcticOceanC.TheIndianOceanD.TheAtlanticOcean9.Whichcountryhasthelargestarea?

A.CanadaB.ChinaC.RussiaD.U.S.APredictionLookatthepicture.Doyouknowthetopicofthisunit?Doyouknowhowourlifebeganontheearth?Afterthe“BigBang”,theearthwasfullofwater.Originalcellsappearedintheocean.Thecellsinthewaterbegantoseparate.Marineanimalscameintobeing.Someanimals(amphibian&insects)cametoland.Reptileappeared.dinosaursMammalsManhadevolvedfromapes.Theydevelopednewmethodsofgrowingfood,huntingandmovingaround.Astimewentbytheycoveredtheearthandhavebecomethemostimportantanimalsontheplanet.Pre-reading

Doyouknowanyancientideaaboutthebeginningoftheuniverse?BigBangPanguseparatestheskyfromtheearth.

中國(guó)神話傳說(shuō)中有盤(pán)古開(kāi)天地的說(shuō)法。巨人盤(pán)古用一把利斧劈開(kāi)混沌,將天地分開(kāi)。死后,他的氣息化成風(fēng)和云,聲音變成轟轟的雷聲,左眼化為太陽(yáng),右眼化為月亮,手足與四肢變成大地的四極與五方的名山,血液化成江河,筋脈鋪成道路,肌肉形成田地,須發(fā)成為星星,牙齒和骨骼化為金屬、珍珠、玉石,汗水成為滋潤(rùn)萬(wàn)物生長(zhǎng)的甘霖和雨露。Nvwamadehumans.Otherlegendsaboutthebeginningofuniverse.TheBiblicalAccountDay1:GodspokeandseparatedlightfromdarknesscreatingDayandNight.Day2:Godspokeandseparatedthewatercreatingskyandocean.Day3:Godspokeandcreateddryland.Day4:Godspokeandcreatedthesun,moonandstars.Day5:Godspokeandcreatedlivingcreaturesintheairandsea.Day6:Godspokeandcreatedthelandanimalsandman.Day7:GodrestedandblessedthisdaycallingitHoly.IndiaBrahmaisthegodfirstrepresentedintheHinduTriad.Heisthecreatoroftheuniverseandalllivingbeingsaresaidtohaveevolvedfromhim.▲B(niǎo)igBangGasNewstarsDyingstarsremnants平面圖

太陽(yáng)系地球大氣1.Whendidthe“BigBang”happen?

Ithappenedseveralbillionyearsago.ScanningReadthepassagequicklyandanswerthequestions.2.Whatformwastheearthafterthe“BigBang”?Theearthwasstilljustacloudofdust.3.Whatmadeuptheearth’satmosphereaftertheearthexploded?

Carbon,nitrogen,watervapourandothergases.4.Howdidwatercomeintobeingontheearth?

Astheearthcooleddownafteritexploded,watercameintobeing.5.What’sthesignificanceofthepresenceofwaterontheearth?

Itallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.6.Whatwasimportanttothedevelopmentoffish?

oxygen.7.Whatmadepossibletheriseofmammalsontheearth?Thedisappearanceofdinosaursmadethepossibletheriseofmammalsontheearth.8.Whyaremammalsdifferentfromalllifeformsinthepast?

Theygavebirthtoyoungbabyanimalsandproducedmilktofeedthem.（）AInsectsandamphibiansappeared.（）BDinosaursappeared.（）CTheearthbecameasolidball.（）DSmallplantsgrewonthewater.（）EReptilesappeared.（）FPlantsbegantogrowondryland.（）GTheearthwasacloudofdust.（）HWaterappearedontheearth.（IShellfishandotherfishappeared.（）JTheuniversebeganwitha“BigBang”.（）KCleveranimalswithhandsandfeetappeared.（）LMammalsapeared.5106）2948371

DetailedreadingPuttheorderofdevelopmentoflifeintoatimeline.12

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Choosethemainideaforeachparagraph()Thearrivalofhumansandtheirimpactontheearth.()Theformationoftheearth.()Thedevelopmentofplantsandanimalsontheearth.()Awidelyacceptedtheoryabouttheformationoftheuniverse.()Theimportanceofwaterforlife.54213II.Answer

thefollowing

questions.1.Whywastheearthdifferentfromotherplanets?

Thewaterremained.2.Whydidtheplantsgrowbeforetheanimalscame?

Becauseplantsprovideoxygenforanimalstobreathe.3.Whyisitwronginfilmsandstoriestoshowdinosaursandpeopletogether?

Becausedinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth.4.Whydoyouthinkthathumansarethecleverestanimalsontheearth?Theyarethecleverestanimalsbecausetheyhavelargerbrainsthananyothercreatureontheearthsofar.5.Thereusedtobenineplanetsinthesolarsystem.Recentlyscientistshavedecidedthatoneofthemcannolongerbeconsideredaplanet.Doyouknowthenameofthatplanet?Doyouknowwhytheyremovedit?Pluto.Scientistsnowthinkitistoosmalltobecalledaplanet.

6.Whatproblemiscausedbyhumanbeings?Theycauseglobalwarming.

III.Fillintheblanksinthefollowingform.TimeWhathappenedBigBang______begantoformandcombinetocreatestarsandotherbodies.AtomsBetween4.5and3.8billionyearsago●Dustsettledintoasolidand______globe.●Theearthexplodedtoproduceits___________.●Thecontinued________ofwaterallowedtheearthtodissolveharmfulgasesand_____intotheoceansandseas.violentatmospherepresenceacidsManymillionsofyearslater●Thefirstsmallplantsonthesurfaceofthewaterproduced_______.●Early_______andallsortsoffishappeared.●Greenplantsbegantogrowonland.●Insectsand___________appeared.oxygenshellfishamphibiansManymillionsofyearslater●________appearedandtheylaideggs.●Dinosaursdeveloped,laideggsand_______formorethan140millionyears.●Mammalsroseand____________babies.ReptilesexistedgavebirthtoAbout2.6millionyearsago●Somesmall______animalswithhandsandfeetappearedandspreadallovertheearth.NowHumansproducetoomuchcarbon_______,makingtheearthtoohot.cleverdioxideIV.True(T)orFalse(F).1.TheearthappearedbeforetheBigBanghappened.2.Theoriginalatmosphereconsistedofnitrogenandoxygen.3.Themaindifferencebetweentheearthandotherplanetsisthatthereiswaterontheearth.4.Lifebeganinwaterandthenonland.FFTT5.Mammalsappearedbeforethedevelopmentofdinosaurs.6.Dinosaurscouldgivebirthtoyoungbabyanimalsandproducedmilktofeedthem.7.Humanbeingsproducetoomuchcarbondioxidewhichcausestheglobalwarmingontheearth.8.Accordingtothetext,humanbeingswoulddisappearintheend.FFTFHowlifebeganontheearth“BigBang”otherbodies________starsEarth:acloudof_____atomsdustSummaryasolid_____theearth’s_____________other4._____Water:____________tothedevelopmentoflifewatervapournitrogencarbon