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1、unit-4-warming-upunit-4-warming-up1.Tolearnthebasicknowledgeaboutsolarsystem2.Togetsomethinginterestingaboutastronomy3.Togetmoreabouttheoriginoftheearth4.Toarousethestudentsinterestinastronomy starssuper moonthe big bang the black holeAstronomyisasciencethatstudiescelestialobjectssuchasplanets,moons
2、,stars,comets,nebulae(星云星云)&galaxies.SolarSystemWhats this?Do you know anything about the solar system?star恒星恒星planet行星行星Which is a star? Which is a planet?Inoursolarsystemeightplanetscirclearoundthesun.1111Whatarethenamesoftheeightplanetsthatcirclearoundthesun?TheRomangoddessofloveTheRomangodofwarM
3、ercury水星水星Earth地球地球Mars火星火星Saturn土星土星Neptune海王星海王星Venus金星金星Jupiter木星木星Uranus天王星天王星Withtheexceptionoftheearth,alloftheplanetsinoursolarsystemhavenamesfromGreekorRomanmythology.TheRomangodofmerchantsandtravellersThekingoftheRomangodsTheRomangodofseedsandsowingThe Greek god of the skyThe Roman god of t
4、he seaMoreinformationaboutSolarsystem.Wecanonlydetectabout5%ofthematterintheuniverse.TheSunscorereleasestheequivalentof100billionnuclearbombseverysecond.Lightfromdistantstarsandgalaxiestakessolongtoreachusthatweareactuallyseeingtheseobjectsastheyappearedinthepast.Shootingstars(流星流星)reallyarentstars.
5、Theyareusuallyjusttinydustparticlesfallingthroughouratmosphere.EventhoughMercuryistheclosestplanettotheSun,temperaturestherecanreach-280degreesFonitssurface.Earthistheonlyplanetnotnamedafteragod.1.Howoldistheearth?A.About3.5billionyearsB.About4.5billionyearsC.About5.5billionyearsD.About6.5billionyea
6、rs2._oftheearthsurfaceiscoveredbywater.A.20%B.30%C.50%D.70%3.Whatisthetotalpopulationofhumansontheearth?A.About3.5billionB.About4.5billionC.About5.5billionD.About6.5billion4.Howlongdoestherotation(自转自转)oftheearthtake?A.12hoursB.24hoursC.amonthD.365daysLetsturntotheEarththeplanetweshouldknowwell.Nowd
7、oaquiztoseehowmuchyouknowaboutourplanettheEarth.5.Whichcontinentisthesmallest?A.AfricaB.NorthAmericaC.SouthAmericaD.Oceania6.OnwhatdayistheEarthdaycelebrated?A.April22B.May4C.August21D.November117.Whichoceanisthelargest?A.ThePacificOceanB.TheArcticOceanC.TheIndianOceanD.TheAtlanticOcean8.Whichcountr
8、yhasthelargestarea?A.CanadaB.ChinaC.RussiaD.U.S.AThe origin of life on earth is a question that interests astronomers. What do you know about it?Each religion and culture has its own ideas about how life began on earth. What do you know?P251&2Pangu separates the sky from the earth.Nvwa made humans.T
9、he Biblical AccountDay 1: God spoke and separated light from darkness creating Day and Night. Day 2: God spoke and separated the water creating sky and ocean. Day 3: God spoke and created dry land. Day 4: God spoke and created the sun, moon and stars. Day 5: God spoke and created living creatures in
10、 the air and sea. Day 6: God spoke and created the land animals and man. Day 7: God rested and blessed this day calling it Holy. Brahma the Hindu god of creationHeisthecreatoroftheuniverseandalllivingbeingsaresaidtohaveevolvedfromhim.平面图平面图Big BangAccording to thebigbang,theuniversewascreated sometimebetween10billionand20billionyears ago from acosmic explosionthathurledmatterinalldirections.结束结束
