Impela uzwile imibukiso ye-convection lapho sesikhulume ngokuhlukile izingqimba zomhlaba. Uma sikhuluma ngemisinga ye-convection ngaphakathi eMhlabeni, sikhuluma ngomehluko wokuminyana kwezinto ezakha ingubo yoMhlaba. Kukhona futhi ama-convection currents afana noketshezi oluhambayo ngenxa yokuhluka kwezinga lokushisa. Kulesi sihloko sizokutshela konke ngakho.
Yimiphi imisinga ye-convection
Lapho sithola uketshezi oluhambayo nolunyakazayo ngoba kukhona umehluko kwezinga lokushisa noma lokuminyana esinemibono ehambisa umbonelo. Ukuze lolu hlobo lwamanje lube khona, kufanele kube noketshezi, kungakhathaliseki ukuthi uketshezi noma igesi. Lokhu kungenxa yokuthi izinhlayiya ezingaphakathi kokuqinile zilungisiwe futhi azinyakazi, ngakho-ke, ukugeleza akukwazi ukubonakala ngenxa yomehluko kokubili izinga lokushisa kanye nokuminyana. Ngaphezu kwalokho, lesi simo sibalulekile ocwaningweni lwe ukuhlangana emhlabeni.
Umehluko phakathi kwamazinga okushisa endawo eyodwa noma enye ngaphakathi kwento efanayo yilokho okubangela ukudluliswa kwamandla kusuka endaweni enkulu kuye kulencane. I-Convection yenzeka kuze kube khona ukulingana okuphelele. Lapho le nqubo yenzeka ngenxa yokudluliswa kokushisa, kwakheka imisinga yendaba esuka kwenye indawo iye kwenye. Ngakho-ke, kubhekwa njengenqubo yokudlulisa okuningi.
Imisinga ye-Convection evela ku- ngokwemvelo zibizwa nangokuthi i-convection yamahhala. Uma, ngokwesibonelo, lokhu kuhanjiswa kwenzeka ngaphakathi kwento efana nefeni noma ipompo, kubizwa ngokuthi yi-convection ephoqelelwe.
Kungani ama-convection currents form
Lolu hlobo lwesenzeko lwenzeka ngenxa yomehluko wokushisa obangela ukuthi izinhlayiya zihambe zenze i-current. Le yamanje ingenzeka futhi uma kunomehluko wobuningi. Imvamisa ukugeleza kuya ohlangothini kusuka lapho kunamazinga aphezulu okushisa noma ukuminyana kuya lapho kunamazinga amancane okushisa nobuningi. Le misinga ye-convection nayo yenzeka emoyeni. Umfutho womoya womoya ugeleza ushaye ubheke lapho kunokuminyana khona kuya lapho kuncane khona. Esimeni seziphepho, indawo yokucindezela okuphansi izoba inhloso yesiqondisindlela somoya, njengoba kubonakala kuyo amafu e-cumulonimbus ngesikhathi sezehlakalo zesimo sezulu esibi.
Lokhu yikho okwenza indawo yengcindezi ephansi ibe yindawo lapho kunezimvula ngisho neziphepho. Lapho okwamanje kudlulisa ukushisa kusuka endaweni yamandla aphezulu kuya endaweni yamandla aphansi, le convection iyenzeka. Kumagesi nasesihlabathini se-plasma nasethempelini eliphakathi nendawo okuholela nasezifundeni ezinamandla aphezulu naphansi, lapho ama-athomu nama-molecule anyakaza khona ukugcwalisa izindawo ezingenalutho. Kungashiwo ngendlela efingqiwe ukuthi uketshezi olushisayo luyakhuphuka ngenkathi uketshezi olubandayo lucwila ngokuqhubekayo.
Lokhu kuzokwenzeka ngokwemvelo ngaphandle kokuthi kube nomthombo wamandla, njengokukhanya kwelanga noma umthombo wokushisa, oguqula inkomba yale misinga. Imisinga ye-Convection yenzeka kuze kube yilapho amazinga okushisa nobukhulu bufana. Ukuthi amazinga okushisa kanye nobukhulu bekufana ngokuphelele ezingxenyeni zomhlaba kunzima kakhulu. Lokhu kungenxa yokuthi uqweqwe lwamazwekazi lusendalweni eqhubekayo nasekubhujisweni, ngakho-ke, okwesithupha ngokuqhubekayo kufaka izinto zokushisa nokuqina okuhlukile kwengubo yomhlaba. Ukungakhulumi ngamazinga okushisa ngaphakathi kwengaphakathi langaphakathi.
Izinto ezisenkabeni yangaphakathi yeplanethi yethu ziqinile ngenxa yengcindezi enamandla ekhona enkabeni. Ingqikithi engaphandle, ngakolunye uhlangothi, inezinto zoketshezi ngoba, yize amazinga okushisa ephezulu kakhulu, ayikho ingcindezi enamandla kangako.
Ngenxa yalokhu ukwethulwa okuqhubekayo kwezinto zokwakha nokwehluka kwezinga lokushisa nokuxinana kuphakeme kakhulu, kukhona lawa abizwa ngokuthi yi-convection currents yengubo futhi ayimbangela yokuhamba Amapuleti eTectonic kanye nezimo ezifana ne- intaba-mlilo.
Izibonelo ezithile
Ukunikeza izibonelo ezithile ezenza lokhu kucace kakhudlwana, sizochaza lokhu okulandelayo: ososayensi abaningi bahlaziya amandla asebenza oketshezini ukuze bawahlukanise ngokwezigaba futhi baqonde ukuguquguquka. Lawa mandla angahlanganisa amandla adonsela phansi, ukungezwani kwendawo, izinkambu ze-electromagnetic, ukudlidliza, umehluko wokugxila, nokwakheka kwezibopho phakathi kwama-molecule. Lawa ma-convection currents angenziwa imodeli futhi achazwe kusetshenziswa okuhlukile izilinganiso zokuthutha ze-scalar.
Isibonelo samanje se-convection kungaba ukuthi kukhiqizwa emanzini abilayo ebhodweni. Lapho nje kufakwa uphizi noma ucezu lwephepha ukulandelela ukugeleza kwamanje, ungabona ukuthi umthombo wokushisa osengxenyeni engaphakathi yomgodi ushisa kanjani amanzi futhi uwunike amandla, okwenza ama-molecule ahambe ngokushesha. . Lapho okokusebenza kwethulwa ezingeni lokushisa eliphansi kuthinta nobuningi bamanzi. Njengoba amanzi ehambela phezulu ashiya amandla athile aphuma ngesimo somusi. Umhwamuko upholisa indawo ngokwanele ukuze amanye ama-molecule abuyele phansi ebhodweni.
Esinye isibonelo samanje se-convection yomoya oshisayo yilesi esenzeka endlini lapho umoya ukhuphuka ophahleni noma ophahleni lwendlu. Lokhu kungenxa yokuthi umoya oshisayo awuminyene kakhulu kunomoya obandayo ngakho uvame ukukhuphuka. Njengoba sesishilo ngaphambili, singabona nangomoya. Ukukhanya kwelanga nemisebe kushisa umoya osemkhathini kusungula umehluko wezinga lokushisa owenza umoya uhambe. Ukwehla kwesilinganiso sokwehla kwamazinga okushisa phakathi kwendawo kuya kwenye, kukhula umbuso womoya. Lokhu kungenxa yokuthi umoya omningi uzosuka endaweni yengcindezi ephezulu uye endaweni yengcindezi ephansi.
