Imibuzo emi-3 yokudlulisa ukushisa
1. Bheka isithombe esilandelayo!
Uma amapayipi amathathu efakwa ebhokisini lengilazi elivaliwe njengoba kuboniswe esithombeni. Intuthu evela kumqulu wephepha ibekwa ekugcineni kwepayipi B bese ingena ngepayipi, khona-ke intuthu izophuma futhi ngamapayipi A no-C njengoba kuboniswe esithombeni. Lesi senzakalo senzeka ngenxa yokudluliselwa kokushisa yi….
A. i-convection
B. ukuqhutshwa
C. ukuqaliswa
imisebe ye-D.
Ingxoxo
Lesi simo senzeka ngenxa yokudluliselwa kokushisa nge-convection. Ukudluliselwa kokushisa kwe-Convection ukudluliselwa kokushisa okuhambisana nokunyakaza kwezinto. Izibonelo zokudluliselwa kokushisa kwe-convection zifaka umoya, amanzi abilayo, noma ukunyakaza kwentuthu, njengoba kuboniswe esithombeni esingenhla.
Uchaza kanjani ukunyakaza kwentuthu njengoba kuboniswe esithombeni esingenhla? Ngaphakathi kwebhokisi lengilazi elivaliwe, kukhona ikhandlela elikhanyisiwe. Ilangabi lekhandlela lishisa umoya ozungezile, likhulisa izinga lokushisa lomoya ngaphakathi kwebhokisi lengilazi. Lokhu kwanda kwezinga lokushisa kubangela ukuthi umoya wande (ukwanda kwevolumu). Lokhu kwanda kubangela ukuthi ubuningi bomoya bunciphe. Ngakho-ke, ubuningi bomoya ngaphandle kwebhokisi lengilazi bukhulu kunobuningi bomoya ngaphakathi kwebhokisi lengilazi. Amagesi ngokwemvelo ahamba esuka ezindaweni ezinobuningi bomoya obukhulu aye ezindaweni ezinobuningi bomoya obuphansi. Lo mehluko wobuningi bomoya ubangela ukuthi intuthu igeleze isuka ngaphandle kwebhokisi lengilazi, elinobuningi bomoya obukhulu, iye ebhokisini lengilazi, elinobuningi bomoya obuphansi.
Uma selingaphakathi ebhokisini lengilazi, ilangabi lekhandlela lishisa umusi, likhuphule izinga lokushisa lalo futhi likhuphule ivolumu yalo. Lokhu kwandisa ubuningi bomusi, okubangela ukuthi uye phezulu uye ezindaweni ezinobuningi bomoya obuphansi. Khumbula ukuthi lapho indawo iphakeme ngaphezu komhlaba, ubuningi bomoya buyancipha ngoba amandla adonsela phansi ayancipha.
Impendulo efanele ngu-A.
2. Naka isitatimende esingezansi:
1. Amanzi asebhodweni ayabila ngoba ayashisa.
2. Emini kuzwakala kushisa kakhulu kunasebusuku.
3. Izinto zokupheka ngokuvamile zinikezwa izibambo zokhuni noma zepulasitiki.
4. Ikhandlela elivuthayo lizoncibilika lize liqedwe.
Kusukela esitatimendeni esithi umphumela wokukhanya uyinombolo...
A. 1 no-3
B. 1 no-4
C. 2 no-4
D. 2 no-3
Ingxoxo
Isitatimende 1: Amanzi asebhodweni ayabila ngoba ayashiswa.
Kuyiqiniso ukuthi okunye ukushisa kudlula kusuka elangeni kuye esitsheni ngemisebe, kanti okunye ukushisa kudlula kusuka esitsheni kuye emanzini nge-conduction. Kodwa amanzi abilayo angumphumela oqondile wokudluliselwa kokushisa nge-convection.
Isitatimende 2: Emini kuzwakala kushisa kakhulu kunasebusuku.
Ilanga likhanya ebusweni bomhlaba emini ngemisebe.
Isitatimende 3: Izinto zokupheka ngokuvamile zinikezwa izibambo zokhuni noma zepulasitiki.
Uma isibambo sesitsha sokupheka senziwe ngensimbi, izandla zompheki zizoshisa ngoba ukushisa noma ukufudumala kudluliselwa ngokuqhutshwa kwesibambo sesitsha sokupheka.
Isitatimende 4: Ikhandlela elivuthayo lizoncibilika lize liqedwe.
I-wax iyancibilika ngenxa yokudluliselwa kokushisa ngemisebe esuka elangeni iye ku-wax.
Ngakho-ke izitatimende eziyimiphumela yemisebe ziyi-2 kanye ne-4.
Impendulo efanele ngu-C.
3. Umcimbi ofanele wokuguqulwa koketshezi uboniswe esithombeni...
Ingxoxo
Ukudluliselwa kokushisa kwe-Convection ukudluliselwa kokushisa okuhambisana nokuhamba kwezinto. Izibonelo zokudluliselwa kwemvelo zihlanganisa ukubila kwamanzi ngesikhathi sokushisa noma ukwakheka kwemimoya yomhlaba nolwandle.
Kule nqubo engenhla, ukushisa kuqala kusuka emlilweni kuya esitsheni ngokuqhutshwa komoya , futhi ngokufanayo, ukushisa kuhamba kusuka esitsheni kuya emanzini ngokuqhutshwa komoya. Okulandelayo, ukushisa kuhamba kusuka kuma-molecule amanzi kuya kwamanye ama-molecule amanzi ngokuqhutshwa komoya.
Amanzi aseduze nephansi lesitsha ayashisa kakhulu, ayanda futhi anciphise ubuningi bawo. Ngokuphambene nalokho, amanzi angaphezulu kwawo, noma amanzi angaphezulu, apholile ngakho-ke anobuningi obukhulu.
Amanzi angaphansi kwesitsha anobukhulu obuphansi, okwenza ukuthi antante futhi athathelwe indawo ngamanzi anobukhulu obuphezulu ngaphezu kwawo. Lokhu kuhamba kwamanzi esitsheni kuyaqhubeka kuze kube yilapho wonke amanzi efika ezingeni lokushisa elifanayo, noma ebila.
Umdwebo onembile ochaza inqubo yokudluliselwa kwamanzi esitsheni uphendula u-C. Isizathu ukuthi amanzi ashisayo akhuphukile ahamba phezulu ngokushesha futhi awahambi eceleni kuqala.
Impendulo efanele ngu-C.
