Hemisphere nke Earth. E ji mara na Atụmatụ

Na mbara ụwa anyị a na-ekewa n'ime anọ ammamihe. Olee akara ókè n'etiti ha? Olee ihe ndị na Ụwa?

The ụwa na meridian

Planet Earth na-ekara abara esisịt na okporo osisi nke a okirikiri - spheroid. Na nkà mmụta sayensị na okirikiri, ya udi na-akpọ geoid, ie "dị ka Earth." Geoid n'elu perpendicular nduzi nke ike ndọda mgbe ọ bụla mgbe.

N'ihi na mma, àgwà nke mbara ala na-eji adabere na ya, ma ọ bụ ihe e chepụtara echepụta e. Otu n'ime ha bụ axis. Ọ na-aga site na etiti nke Earth, ejikọta elu na nke ala akụkụ, a na-akpọ North na South osisi.

N'etiti okporo osisi na ihe hà anya si ha, ndị na-esonụ bụ ihe e chepụtara echepụta akara na-akpọ ụwa. Ọ bụ kwụ na na-delimited na Southern (ihe niile n'okpuru akara) na North (niile n'elu akara) Ụwa. Ogologo nke ụwa bụ ubé karịa 40 puku kilomita.

Ọzọ chepụtara echepụta akara - Greenwich, ma ọ bụ na-efu meridian. Nke a bụ a vetikal akara agafe Observatory na Greenwich. Meridian planet abahade n'ebe ọdịda anyanwụ nakwa n'ebe ọwụwa anyanwụ ammamihe, na bụ amalite ji atụ lonjituudu.

The iche nke Southern na Northern ammamihe

kwụ n'ahịrị nke ụwa na-aghasasị planet na ọkara, agafe ọtụtụ kọntinent. Africa, Eurasia, na South America na-emezughị nri na abụọ ammamihe. Ndị fọdụrụ kọntinent dị n'ime otu. Ya mere, Australia na Antarctica bụ kpamkpam n'ebe ndịda na North America - na n'ebe ugwu.

Hemisphere nwere ndị ọzọ dị iche iche. N'ihi North osisi na Arctic Ocean idụhe nke Northern Hemisphere dị ka a dum bụ softer karịa South ebe ala - Antarctica. Kara aka na Ụwa na-abụghị: oyi na ugwu nke planet abịa a oge ke ndaeyo n'ebe ndịda.

Ihe dị iche hụrụ na ije nke ikuku na mmiri. North nke ụwa osimiri na-aga na ebili mmiri na-mehieworonụ-nri (nri n'usọ osimiri na-abụkarị ihe nkpoda), anticyclones bugharia malite, na ajọ ifufe - megide. South nke ụwa, ihe niile na-eme kpọmkwem na-abụghị.

Dị iche iche, ọbụna n'eluigwe nke kpakpando efefe. Ọgụgụ na onye ọ bụla Ụwa bụ dị iche iche. Isi guideline bụ pola kpakpando dị n'ebe ugwu nke Ụwa Southern Hemisphere ndu eje ozi dị ka Southern Cross. N'elu ụwa na-achịkwa ala, ya mere isi ọnụ ọgụgụ ndị bi ebe a. N'okpuru ebe a na ụwa na ngụkọta bi bụ 10%, dị ka Oceanic akụkụ kasị pụta ìhè.

Western na Eastern Hemisphere

N'ebe ọwụwa anyanwụ nke praịm meridian odude Eastern Hemisphere nke Earth. Ọ na-emi odude n'ime Australia, ka ukwuu nke Africa, Eurasia, akụkụ nke Antarctica. Ọ bụ ebe obibi dị 82% nke ụwa bi. Na geopolitical na omenala okwu a na-akpọ Old World, dị ka megide New World of America. N'ebe ọwụwa anyanwụ, ọ bụ ndị kasị ibu dịịrị banye na mmiri, a miri emi trough na ugwu ndị kasị elu na mbara ala.

Western Hemisphere nke Earth-emi odude ke n'ebe ọdịda anyanwụ nke Greenwich meridian. Ọ na-ekpuchi North na South America, Africa na Eurasia. Ọ na-agụnye dum Atlantic Ocean na a ukwuu nke ndị Pacific. Ebe a bụ ndị fọdụrụ n'ezinụlọ ugwu agbụ ígwè ndị kasị ibu n'ụwa ugwu mgbawa, driest desert, ndị kasị Alpine ọdọ na miri osimiri. Ọ na-ebi n'ebe ọdịda anyanwụ nke ụwa na 18% nke ndị bi na.

Ụbọchị Line

Dị ka ekwuola, ndị Western na Eastern ammamihe nke Earth-aghasasị Greenwich Meridian. Ọ bụ a n'ihu nke 180th meridian, nke delineates ókè-ala na n'akụkụ nke ọzọ. Ọ bụ a akara mgbanwe ụbọchị, ebe a taa amama n'ime echi.

On abụọ nke meridian ofu dị iche iche kalenda ụbọchị. Nke a bụ n'ihi na mbara ala adiana. Ụbọchị Line na-ukwuu n'ime-agabiga n'ókèala nke oké osimiri, ma obe ụfọdụ àgwàetiti (Vanua Levu na Taviuni t. H.). Na ebe ndị a n'ihi na mma nke ahịrị ahụ gara tinyere ókè nke ala, ma ọ bụ ndị bi n'otu agwaetiti dị adị dị iche iche ụbọchị.