Ikhweyitha Umhlaba. Iimpawu Iimpawu

iplanethi yethu yahlulwe zifaka ezine. Indlela ukuphawula imida phakathi kwabo? Ziziphi iimpawu ezi ikhweyitha?

I-ikhweyitha kunye okuyi

Planet Earth emise atshabalalisa kancinci kwi izinti sphere - spheroid. Kwizangqa yenzululwazi, imilo yayo ubizwa ngokuba geoid, okt "like Umhlaba." indawo Geoid nkqo ulwalathiso womxhuzulane nanini na.

Ukunenzela lula, iimpawu umhlaba babesebenzisa imigca enemiqathango, okanye ecingelwayo. Enye yazo esqwini. Udlula embindini Umhlaba, ukudibanisa inxalenye ephezulu nesezantsi, ngokuba North noMzantsi Pole.

Phakathi izibonda kwi umgama ngokulinganayo kubo, oku kulandelayo ngumgca wentelekelelo ebizwa-ikhweyitha. Kuyinto oxwesileyo kwaye emida kumZantsi (yonke ngezantsi umgca) kunye North (ngasentla zonke line) ikhweyitha. Ubude neikhweyitha kancinci ngaphezulu kwama-40 ophosa.

Enye komgca wentelekelelo - Greenwich, okanye ithe cwaka zero. Le umgca nkqo edlula Observatory e Greenwich. planet okuyi wohlula zifaka Koloni naseMpuma, kwaye isiqalo sokubala entshonalanga.

Umahluko zifaka eseMazantsi kunye noMntla

umgca oxwesileyo kweikhweyitha okuphosela emhlabeni kubini, ukunqumla amazwekazi eziliqela. Afrika, Eurasia, kunye Umzantsi Melika inxenye tye zifaka ezimbini. Amazwekazi ezishiyekileyo ibekwe ngaphakathi omnye. Ngoko ke, Australia kunye Antarctica ngokupheleleyo emazantsi nakuMntla Melika - emantla.

Ikhweyitha abe ezinye iiyantlukwano. Ngenxa North Pole ukuya Arctic Ocean imozulu Northern saseNtla liphela lithambile ngaphezu South apho lizwe - Antarctica. Seasons kwenye ikhweyitha: ubusika kwinxalenye esemantla planethi kufika ngexesha ehlotyeni engasezantsi.

Umahluko iqatshelwe intshukumo umoya namanzi. North lokusetyenziswa kwemali ikhweyitha umlambo kunye nemisinga Ocean baphambuke ukuya ekunene (bank lasekunene umlambo idla eweni ngaphezulu), anticyclones Jikelezisa, kunye iinkanyamba - nxamnye. UMzantsi we-ikhweyitha, yonke into eyenzekayo kanye okwahlukileyo.

Ezahlukeneyo, nkqu kabhaka isibhakabhaka phezulu. Umfanekiso in ikhweyitha nganye eyahlukileyo. Esi sikhokelo engundoqo nkwenkwezi polar kwinxalenye esemantla komhlaba Southern saseNtla isikhokelo ukhonza Southern Cross. Ngaphezu neikhweyitha ilawula ilizwe, ngoko ke inani esisiseko yabantu abahlala apha. Ngezantsi ikhweyitha bebonke yi-10%, njengenxenye yolwandle olubalaseleyo.

Koloni naseMpuma saseNtla

Ukuya ngasempumalanga ithe cwaka inkulumbuso ibekwe Eastern saseNtla boMhlaba. Kubhaliwe ibekwe ngaphakathi Australia, yeAfrika, Eurasia, inxalenye Antarctica. Kuyinto ekhaya ukuba malunga nama-82% yabantu ehlabathini. Kwiikota politiko kunye namasiko ibizwa ngokuba Endala World, njengoko kuthelekiswa Yehlabathi Elitsha eMelika. Xa osempuma ngayo usingasiqithi inkulu, kwitanki lamanzi enzulu nentaba aphezulu kakhulu kwiplanethi yethu.

AseNtshona yoMhlaba ise ngasentshonalanga Greenwich okuyi. Iquka uMntla noMzantsi Merika, Afrika nakwamanye amazwe aphesheya. Oku kuquka yonke Atlantic Ocean yaye inxalenye enkulu wePasifiki. Nantsi intaba chain mde mlilo yehlabathi ngobukhulu, intlango lawona, esiluhlaza ichibi kakhulu yaye umlambo enzulu. Lowo uhlala kwinxalenye esentshona yehlabathi% 18 kuphela labemi.

date Line

Njengoko sele kukhankanyiwe, i zifaka Koloni naseMpuma yoMhlaba iyahlula yeGreenwich Meridian. It is a phambili ithe cwaka 180th, leyo delineates umda kwelinye icala. It is a imihla utshintsho umgca, apha namhlanje iba ngomso.

Kumacala omabini iintsuku zekhalenda okuyi esisigxina ezahlukeneyo. Oku kungenxa ukujikeleza umhlaba ukuze ujikeleze kakuhle. Umhla Line becala udlula kummandla wolwandle, kodwa agqithe ezinye iziqithi (Vanua Levu kunye Taviuni t. H.). Kwezi ziindawo lula komgca safudukela ngapha komda womhlaba, okanye abemi besiqithi mnye ibe khona imihla ezahlukeneyo.