the journey of a waterdrop作文.docx

thejourneyofawaterdrop作文The"heavenandearth"thisskill,itseemsthatonlythemythicalstorynJourneytotheWest"intheMonkeyKingwillhave.Canwateralsodoit?Yes,itcanreallydoit.Therealstartingpointofthejourneyofasmalldropofwaterisfromevaporation,thesunwithasmalldropofwaterfloatingintotheatmosphere,tothefirststopofthejourneyofasmalldropofwater-toachievetherealuptoheaven.Thisisthemostimportantpartofthewatercycle.Thewatervaporproducedbyevaporationenterstheatmosphereandmoveswithatmosphericactivity.Themostimportantpartofthewatervaporintheatmospherecomesfromtheoceans,andpartofitalsocomesfromevaporationfromthesurfacesofthecontinents.Todayoursmallwaterdroplets,fromthearmsofthemotheroftheocean,whenthesunwarmlydressestheseliquidspritesintogaseouscherubstotheatmosphere,withthewinduncleledfromtheseaovertheplaytothelandovertheprocess,inthewatercycleiscalledwatervaportransport,butitisoneofthemostactivelinksinthewatercycle.Thesecondstopofthejourneyofsmalldropsofwaterisachievedthroughprecipitation.Afterplayinginthesky,thesmalldropsofwaterchangebacktotheiroriginalspriteoutfits,andwiththegreetingsfromtheskytotheearth,theyfloattothethirdstopofthejourneyofsmalldropsofwater-theground,withafeelingofsolidity.Thewaythisjourneyisdoneisthroughrunoff.Runoffisthedifferencebetweentheamountofprecipitationandevaporationinaregion(watershed).Themulti-yearaverageoceanicwaterbalanceequationis:evaporation=precipitation-runoff;themulti-yearaveragelandwaterbalanceequationis:precipitation=runoff+evaporation.However,thegeographicdistributionofprecipitationandevaporationisnotuniformforeitheroceansorland,andthisdifferenceismostevidentatdifferentlatitudes.Thefourthstopofthedropletjourney,let,salsofeelthesmalldropofwaterintotheground'1.Infact,wearetalkingaboutinfiltrationandundergroundrunoff,whichreferstotheprocessofwaterinfiltrationthroughthegroundintothesoil.Thephysicalprocessofwaterinthesoilundertheactionofmolecularforces,capillarygravityandgravity,isanimportantpartoftheformationofrunoff.Experiencedthe"heavenandearth"ofthesmalldropsofwaterisreallyabithomesick,inthehappyriverinthebigriver,orindifferentundergroundriverwalk,andfinallyreturnedtotheirhomesea.Many,manysmalldropsofwater,intheirhappyjourney,sothatthewaterisfullofspirituality,sothattheworldofwaterisaliveandwell.Wecallthetravelprocessofsmalldropsofwaterthewatercycle.