Ngokuqinisekileyo ngaphezu kwesihlandlo esinye ukhe wathetha okanye wabona malunga ne iilwandle neelwandle kwaye ubudidekile xa ubiza into yolwandle nolunye ulwandle. Bahluke njani ngenene? Ukwahlula ngcono zombini iindawo ezahlukileyo ngokwendawo nangokwemvelo, sisebenzisa iikhonsepthi zolwandle neelwandle. Zombini izixa ezikhulu zamanzi anetyuwa ahlala kwizityalo, izilwanyana kunye neminye imiba enomdla kuqoqosho lwala mazwe, ezinjengeedipozithi esinazo Iqonga lelizwekazi.
Ngaba uyafuna ukwazi ukuba yeyiphi umahluko ophambili phakathi kweelwandle kunye neelwandlekazi? Kweli nqaku siza kukuxelela ngokweenkcukacha ezinkulu.
Yintoni ulwandle
Into yokuqala ekufuneka siyazi ukuba siyazi umahluko phakathi kweelwandle kunye neelwandlekazi kukwazi ukuba yintoni into nganye eyahlukileyo. Ngale ndlela, sinokugqiba ukufunda eli nqaku kwaye singabi namathandabuzo ngalo. Iilwandle Iinkonzo ezinkulu zamanzi anetyuwa eziyinxalenye yeplanethi yasemhlabeni. Zezi zigubungela wonke umhlaba. Kukho iilwandle ezi-5 kwihlabathi liphela ezahlula amanzi kwihlabathi liphela. Makhe sibone ukuba zintoni:
- Ulwandlekazi lweAtlantic. Yiyo eyahlula amazwekazi aseMelika, eYurophu naseAfrika. Yeyona ibaluleke kakhulu kuyo yonke ukusukela, ukuthengisa, yindawo enkulu yokuthumela kunye nokungenisa elizweni. Ukongeza, inebhanti lokuhambisa elenza kwakhona ubushushu kunye nokubanda kobunzima bamanzi ukusuka kwiikhweyitha ukuya kwipali esemantla ngendlela elungeleleneyo.
- Ipacific Ocean. Yeyona inolwandiso olukhulu lwazo zonke iilwandlekazi. Indawo yayo imalunga ne-180 yezigidi zeekhilomitha. Ime phakathi kwamazwekazi aseAsia, iMelika kunye ne-Oceania.
- Ulwandlekazi lwaseIndiya. Iphakathi kwe-Afrika, i-Asiya ne-Oceania kwaye incinci. Inommandla wezigidi ezingama-74 zeekhilomitha zesikwere.
- Ulwandle lweAntartic. Ingena kuphela kwizigidi ezili-14 km2 kwaye igubungela iNorth Pole yonke.
- Ulwandle lweAntartic. Ihlala malunga ne-22 yezigidi zeekhilomitha kwaye yeyona inabileyo kwipali esemazantsi.
Ingcaciso ngolwandle
Ngoku siyazi ukuba zithini iilwandlekazi kwaye zeziphi ezisehlabathini. Kwimeko yeelwandle yenye into ngokupheleleyo. Iilwandle ziindawo ezinkulu zamanzi anetyuwa ezinokuthi okanye zingadityaniswa nolwandle. Bahlala kunjalo. Zizona zincinci zincinci kunolwandle kwaye ziphantsi. Abaqheleki ukuba neendawo zendalo kwaye basondele eMhlabeni. Kukho amaza ezilwandle hayi elwandle.
Singenza uluhlu kunye neelwandle eziphambili kwihlabathi liphela nangona, ngokungafani nolwandle, zininzi ngakumbi kwihlabathi liphela ngaphandle kolu luhlu. Apha sibeka kuphela ezona zibalulekileyo:
- Ulwandle lasemediterranean. Lulolona lwandiso lukhulu lwendawo yelizwekazi ngaphakathi kwiplanethi yonke. Kuphakathi kweAfrika, iAsia neYurophu.
- Ulwandle lweBaltic. Lulwandle olukumntla-mpuma weYurophu. Indawo yayo yi-420 lamawaka eekhilomitha zesikwere.
- Ulwandle lweCaribbean. Ngokuqinisekileyo uluvile olu lwandle izihlandlo eziliwaka njengendawo yokuphupha yeholide. Ime phakathi kwe-Central America kunye ne-South America ngolwandiso lwe-2,7 yezigidi zeekhilomitha.
- Ulwandle lweCaspian. LuLwandle olukumazantsi mpuma eYurophu kwaye lunendawo engama-371 lamawaka eekhilomitha ezisikwere.
- ULwandle oluFileyo. Olunye ulwandle oya kuthi ngokuqinisekileyo uve ngalo. Ime kuMbindi Mpuma.
- ULwandle oluMnyama. Idume ngombala wamanzi ayo, ibekwe phakathi kweYurophu, iAnatolia kunye neCaucasus.
- ULwandle Olubomvu. Ikwadume ngombala wayo. Ifumaneka phakathi kweAfrika neAsia.
Umahluko ophambili phakathi kweelwandle kunye neelwandle
Ngoku ukuba siyazazi iinkcazo zolwandle kunye neelwandle kunye neyona iphambili kwihlabathi liphela, masibone ukuba yintoni umahluko. Umahluko ophambili phakathi kweelwandle kunye neelwandle bubungakanani. Zonke iilwandle zincinci kuneelwandle. Zihlala zivaliwe kwaye ziphakathi komhlaba kunye neelwandle. Iilwandle ngamanzi avulekileyo kwaye ubunzulu ngakumbi.
Ngokungafaniyo nolwandle, zininzi Imisinga yolwandle ezichaphazela ukujikeleza kwamanzi kunye nemozulu. Le misinga yolwandle inokwenza iinkanyamba, ekunokwenzeka ukuba zingenzeki kulwandle. Kukho ezinye iilwandle ezingenalo ulwandiso olukhulu kakhulu, ke zithathwa njengamachibi amakhulu anetyuwa. Umzekelo, eulwandle lweCaspian, uLwandle oluFileyo kunye noLwandle iAral zithathwa njengamachibi amakhulu anamanzi etyuwa kuba maninzi kakhulu.
Enye into bubushushu. Ngenxa yokuba iilwandlekazi zifikelela kubunzulu obukhulu, zihlala zifikelela kumaqondo obushushu asezantsi. Iilwandle ezikufutshane nomphezulu womhlaba zifumana imitha yelanga ngakumbi kwaye zinobushushu obuphezulu kunolwandle. Oku kwahluka kwiilwandle ezahlukeneyo, ke akukho meko. Umzekelo, amanzi oLwandle lweMeditera afudumele kunalawo oLwandle Olufileyo.
Ngelixa iilwandle ziyinkqantosi kwaye zincipha ngomthamo ngenxa yobushushu behlabathi, iilwandle kunye neelwandle ziye zonyuka ngevolumu ngenxa yokunyibilika komhlaba iminqwazi yomkhenkce.
Ngokubhekisele kwiyantlukwano, ulwandle lunenani elikhulu lezinto eziphilayo kunolwandle. Kungenxa yokuba bafumana isixa esikhulu semitha yelanga kwaye banobunzulu obuncinci. Ke ngoko, ziindawo apho inani elikhulu leentlobo zinokuhlala khona. Kwiilwandlekazi sifumana iintlobo ezimbalwa, kodwa ziintlobo ezinakho ukuziqhelanisa neemeko ezahlukeneyo kunye nobunzulu. Ke, iintlobo ezininzi ezihlala ezinzulwini zamanzi azinakufudukela kwiindawo eziselunxwemeni.
Nangona kukho iintlobo ngeentlobo zezinto eziphilayo elwandle, kukwakho nezinga eliphezulu lokufa, kuba zichanabeke ngakumbi kungcoliseko lwendalo. Iilwandle, zikhulu kwaye zikude nonxweme, bathambekele ekumelaneni ngcono nefuthe lokusingqongileyo labantu.
Ndiyathemba ukuba ngale ngcaciso uyayazi ngokucacileyo umahluko phakathi kweelwandle kunye neelwandle.