Uvile ngenene Ukuhanjiswa kwemisinga xa sithethe ngokwahlukileyo Umaleko woMhlaba. Xa sithetha ngemijelo yokuhambisa ngaphakathi komhlaba sithetha ngumahluko wobuninzi bezinto ezenza ingubo yomhlaba. Kukho imijikelezo yokuhambisa amanzi njengamanzi ahambayo kuba kukho umahluko kubushushu.
Kule nqaku siza kukuxelela konke malunga nayo.
Zithini ii-convection currents
Xa sifumana ulwelo oluhambayo nolushukumayo kuba kukho umahluko kubushushu okanye koxinano esinokuhambisa omoya. Ukuze olu hlobo lwangoku lubekhona, kufuneka kubekho ulwelo, nokuba lulwelo okanye igesi. Kungenxa yokuba amasuntswana ngaphakathi kokuqina azinzile kwaye awashukumi, ke ngoko, awunakubona ukuhamba ngenxa yokungafani kubushushu bobabini kunye noxinano.
Umahluko phakathi kwamaqondo obushushu engingqi enye okanye enye kwinto enye yile nto ibangela ukuhanjiswa kwamandla ukusuka kwindawo enkulu kuye kwincinci. Ukuhanjiswa kuyenzeka de kubekho ulingano olupheleleyo. Xa le nkqubo isenzeka ngenxa yokuhambisa ubushushu, imisinga yento iyenziwa isuka kwenye indawo iye kwenye. Ke ngoko, ikwaqwalaselwa njengenkqubo yokudlulisa ubunzima.
Imijikelezo yokuhanjiswa evela kwi Ngokwendalo zibizwa ngokuba kukuhanjiswa ngokukhululekileyo. Ukuba, umzekelo, le convection yenzeka ngaphakathi kwesixhobo esifana nefeni okanye impompo, ibizwa ngokuba kukuhambisa ngenkani ngokunyanzelwa.
Kutheni le nto ii-convection currents form?
Olu hlobo lwesenzeko lwenzeka ngenxa yomahluko wobushushu obangela ukuba amasuntswana ahambele ekwenzeni imeko yangoku. Le yangoku inokwenzeka kwakhona xa kukho umahluko kuxinano. Ngokwesiqhelo ukuhamba kuhamba kwicala apho kukho ubushushu obuphezulu okanye uxinano ukuya apho kukho ubushushu obuncinci kunye noxinano. Le mibhobho yokuhanjiswa iyenzeka nasemoyeni. Uxinzelelo lomoya ojikelezayo luhamba luvela kwicala apho kukho uxinano ngakumbi ukuya apho kukho khona okuncinci. Kwimeko zesaqhwithi, indawo yoxinzelelo oluphantsi iya kuba kukujoliswa kwicala lomoya.
Yiyo le nto eyenza indawo ephantsi yoxinzelelo indawo apho kukho imvula kunye nezaqhwithi. Xa okwangoku kugqithisa ubushushu ukusuka kwindawo yamandla aphezulu ukuya kwindawo yamandla asezantsi, oku kuhamba qhubekeka Kwiigesi nakwisanti yeplasma nakubushushu obuphakathi obukhokelela kwimimandla yoxinaniso oluphezulu nolusezantsi, apho iiathom kunye neemolekyuli zihambela ukuzalisa iindawo ezingenanto. Kunokuthiwa ngendlela eshwankathelweyo yokuba ulwelo olushushu luyenyuka ngelixa ulwelo olubandayo luzika ngokuqhubekayo.
Oku kuyakwenzeka ngokwendalo ngaphandle kokuba kukho umthombo wamandla, njengokukhanya kwelanga okanye umthombo wobushushu, otshintsha indlela oya kuyo. Ukuhamba kwe-Convection kwenzeka kude kube ngamaqondo obushushu kunye noxinzelelo olufanayo. Ukuba amaqondo obushushu kunye noxinano lwalufana ngokupheleleyo kubume boMhlaba kunzima kakhulu. Kungenxa yokuba iqhekeza lelizwekazi lisendalweni eqhubekayo kunye nentshabalalo, ke ngoko, isithandathu ngokuqhubekekayo sibandakanya izixhobo ezinobushushu obahlukeneyo kunye nokuxinana kwengubo yomhlaba. Ungasathethi ke ngamaqondo obushushu ngaphakathi kwangaphakathi.
Izixhobo kumbindi wangaphakathi weplanethi yethu zomelele ngenxa yoxinzelelo olomeleleyo olukhoyo embindini. Isiseko sangaphandle, kwelinye icala, sinezinto ezinamanzi kuba, nangona amaqondo obushushu ephezulu kakhulu, akukho xinzelelo lunamandla kangako.
Ngenxa yokungeniswa okuqhubekayo kwezinto kunye nomehluko kubushushu kunye noxinano luphezulu kakhulu, kukho okubizwa ngokuba kukuhambisa umbhobho wengubo kwaye kungunobangela wokuhamba Amacwecwe eTectonic.
Eminye imizekelo
Ukuze sikwazi ukubeka imizekelo eyenza konke oku kucace ngakumbi, siza kuchaza oku kulandelayo: uninzi lwezazinzulu luhlalutya amandla asebenza kulwelo ukuze lwazihlule luze luqonde ukuhanjiswa. Le mikhosi inokubandakanya ubunzima, uxinzelelo lomhlaba, intsimi ye-electromagnetic, ukungcangcazela, ukungafani koxinzelelo, kunye nokwenziwa kweebhondi phakathi kweemolekyuli. Ezi currenti zokuhambisa zinokumodareyithwa kwaye zichazwe kusetyenziswa iindlela ezahlukeneyo zothutho lwesikali.
Umzekelo we-convection yangoku unokuveliswa ngamanzi abilayo embizeni. Ngokukhawuleza xa ii-ertyisi ezimbalwa okanye isiqwenga sephepha kongezwa ukulandelela ukuhamba ngoku, ungabona ukuba umthombo wobushushu ongaphakathi emngxunyeni ufudumeza amanzi kwaye uwunike amandla, usenza iimolekyuli zihambe ngokukhawuleza. Xa izinto ziziswa kubushushu obuphantsi ikwachaphazela uxinano lwamanzi. Njengoko amanzi esiya kumphezulu ashiya amandla athile asindayo ngohlobo lomphunga. Umphunga upholisa umphezulu ngokwaneleyo ukuze iimolekyuli zibuyele ezantsi embizeni.
Omnye umzekelo wokuhambisa omoya oshushu ngulowo ufumaneka endlwini xa umoya unyuka eluphahleni okanye eluphahleni lwendlu. Kungenxa yokuba umoya oshushu uxinene kunomoya obandayo ngenxa yoko uhlala unyuka. Njengoko besesitshilo ngaphambili, sinokuyibona nomoya. Ukukhanya kwelanga kunye nemitha kushushu umoya emoyeni ukuseka umohluko wobushushu obangela ukuba umoya uhambe. Umahluko kumaqondo obushushu phakathi kwenye indawo nenye, kokukhona kulawula umoya. Kungenxa yokuba umoya omninzi uya kusuka kwindawo yoxinzelelo oluphezulu uye kwindawo yoxinzelelo olusezantsi.
Ndiyathemba ukuba ngale mizekelo icace gca ukuba yeyiphi na imisinga ye-convection.