Iplanethi yethu ubukhulu becala yenziwe ngamanzi ahlulelwe elwandle. Yimizimba emikhulu yamanzi eyakhokelela kubomi kwiplanethi njengoko sisazi namhlanje. Yonke i iilwandle zehlabathi baneempawu ezahlukeneyo kwaye yiyo loo nto ke behlelwa ngamagama ahlukeneyo. Ngamnye kubo ugcina isixa esahlukileyo sendalo engafaniyo ngokwemeko yokusingqongileyo.
Kule nqaku siza kukuxelela yonke into ofuna ukuyifumana malunga neelwandle zehlabathi kunye neempawu zazo.
Yintoni ulwandle
Okokuqala kukukwazi ukuba yintoni ulwandlekazi ukuze wazi ukuba zeziphi iintlobo ezahlukeneyo ezikhoyo emhlabeni. Xa sisithi igama ulwandle, silinxibelelanisa nezixa ezikhulu zamanzi ezigubungela umhlaba omde. Akukho manyathelo ngqo okulinganisa ulwandle. Siyazi kuphela ukuba banolwandiso olukhulu, ukuba uninzi lwesininzi. Ukuba sithetha ngomhlaba, siyabona ukuba singahlulahlulahlula sibe sisixa esikhulu samanzi anetyiwa. Nangona kunjalo, njengoko iimpawu zahlukile kwindawo nganye kwiplanethi, zahlulwe zaziindidi ezahlukeneyo.
Umdla wokwahlula isixa esikhulu samanzi esigubungele iplanethi yethu kwiindidi ezahlukeneyo kukhulu kokukwazi ukufunda nzulu.
Iilwandle zehlabathi
Siza kwazi ukuba zeziphi iilwandlekazi eziphambili zehlabathi kwiimpawu zazo eziphambili:
- Ipacific Ocean: Yeyona inkulu kwaye ine-714 yeekhilomitha ezinamanzi. Qho ngonyaka kuncitshiswa isentimitha enye ngenxa yokuhamba kwamacwecwe eteknoloji. Nangona oku kunjalo, iselolona lwandle lukhulu emhlabeni. Ezona ndawo zinzulu emhlabeni zifunyenwe kula mzimba mkhulu wamanzi. Phakathi kwabo sinalo umnxeba Umsele kaMariana.
- Ulwandlekazi lweAtlantic: incinci kunaleya yangaphambili, ilinganisa kancinci ngaphezulu kwesiqingatha. Nangona kunjalo, likhaya kwiidipozithi ezininzi zeoyile kwaye zenza unxibelelwano olubalulekileyo phakathi kweYurophu neMelika. Enye yezona zinto zinomdla malunga nolwandle kukuba yeyona inetyiwa ephezulu.
- Indian Ocean: Lwesithathu ngobukhulu kulwandlekazi lwehlabathi kwaye ligubungele i-19.5% yamanzi ewonke emhlabeni. Ibalasele ukuba nobutyebi obukhulu beoyile kunye needipozithi zerhasi yendalo. Eli nani lamafutha eefossil likwazile ukuzisa ubutyebi obuninzi kwezinye izizwe zoMbindi Mpuma.
- Ulwandlekazi iArctic: ithathwa njengoyena mncinci kunye nobuncinane kunabo bonke. Nangona kunjalo, kuyeyona nto ibanda kakhulu elwandle. Ikhaya ukuya kwisixa esikhulu sobomi baselwandle ngaphandle kwezona meko zinzima. Ibe lolunye lolwandle olubaluleke kakhulu kulungelelwaniso lwendalo lweentlobo ezininzi zeendawo zokuhlala ezingasentla. Ngombulelo kwezi meko zokungafaniyo kokusingqongileyo, inani elikhulu leentlobo zezinto ezikhoyo ziyafumaneka.
- Ulwandle lweAntartic: lolunye lolwandle lokugqibela ukwahlulwa ngabantu. Ibonakaliswa ngokuba yiyo kuphela ejikeleze ilizwekazi ngokupheleleyo. Ubuncinane zingama-10.000 50 iintlobo zezilwanyana ezifumaneka kolu lwandle kwaye ziqulathe ikharbhon ephindaphindwe kalishumi kunaleyo yomhlaba.
Iimpawu kunye nokubaluleka kweelwandle zehlabathi
Kuba ngokwenyani akukho mida yasemzimbeni okanye izithintelo ezahlula ulwandle, kubonakala nje kwiimephu kunye namanani okulinganisa. Oku kulula ukwahlulahlula kwisifundo ngokunika iimpawu ezahlukeneyo kunye nokuhlukahluka kwendawo nganye kwizindlu zehlabathi. Njengoko besesitshilo ngaphambili, iAtlantic Ocean lulwandle olunetyiwa ephezulu. Oku akuthethi ukuba ngumzimba owahlukileyo wamanzi kwihlabathi liphela. Kodwa, ekubeni iyindawo enetyiwa kwaye inezinye iimpawu, likhaya lezinye iintlobo zezilwanyana nezilwanyana. Ke, ungaphila ngokugqibeleleyo le mizimba yamanzi ukuze ukwazi ukuyifunda ngokuzimeleyo.
Ngaphandle kweekhilomitha ezimbalwa zamanzi ezijikeleze unxweme lwesizwe, akukho rhulumente unokuba nolwandle phantsi kobunini. Isizwe ngasinye sikhululekile ukuhamba ngolwandle okanye ngomoya kwezi zithuba zamanzi. Ngenxa yoku, kukho imigaqo nemithetho elawula ukusetyenziswa kunye nokuxhaphazwa kweelwandle ukuze kugcinwe ukugcinwa kunye nokusetyenziswa okuzinzileyo.
Iilwandle zizinto eziphambili kulo mhlaba. Ukuba bafunda nje kuphela amanzi angayinto elula kakhulu, kodwa zininzi iindlela zobomi ngaphakathi kuwo kwaye kuthathe abantu uhambo lwembali ukuwafumanisa. Ngaphandle koku, nanamhlanje ayizizo zonke iintlobo ezaziwayo kuba indawo inkulu. Kuzo zonke iilwandlekazi zehlabathi, zimalunga nesi-5% kuphela ezaziwayo. Kwaye ngaba uphando kwezi zinto eziphilayo lubonisa iindleko eziphezulu zoqoqosho kunye nomngcipheko omkhulu kubaphandi.
Kunokuthiwa iilwandle zehlabathi kukutya kweelwandle nemilambo. Kuba umntu akanazo iimpawu eziyimfuneko ukuze akwazi ukufikelela kubunzulu bolwandle, ukusebenzisa izixhobo zetekhnoloji kubalulekile. Nangona kunjalo, kukho iingozi ezinokubakho kwiingozi okanye ukufa ngesiquphe. Ezi zizathu ezibangele ukuba bakwazi ukwenza iirobhothi ezizodwa zokufunda imingxunya, iinduli zaselwandle kunye neendawo ezinzulu apho ukukhanya kungafikeleli khona. Kwezi ndawo ingozi inkulu kakhulu. Kwaye ayilophando olunokwenziwa ngendlela elawulwayo kuba zifuna iindleko eziphezulu zoqoqosho kunye notyalo-mali oluphezulu. Ukongeza, kuba indawo yokuphanda inqabile, amathuba okuba into eyahlukileyo kwinto esele isaziwa ayizukufunyanwa.
Amanqanaba afundwe kakhulu olwandle atyhile iinyani ezimbalwa ezinomdla. Kwaye iintlobo ezahlukeneyo zobomi zigcinwa zixhomekeke ngokupheleleyo kwiimeko zamanzi. Ezi meko ikakhulu ngamaqondo obushushu, ubutyuwa, uxinano, uxinzelelo kunye nongcoliseko. Ungcoliseko lwamanzi Sele iyingxaki yehlabathi jikelele echaphazela ngokubonakalayo imeko yemichiza yamanzi. Ngale ndlela, iilwandle ezingcolileyo zehlabathi zithintela ukukhula kweentlobo ezininzi zobomi ezixhasa impilo yazo zonke izinto eziphilayo nendawo eziphila kuzo.
Ndiyathemba ukuba ngolu lwazi ungafunda ngakumbi malunga neelwandle zehlabathi kunye neempawu zazo.