Convection currents are identified in Earth's mantle. Heated mantle cov ntaub ntawv qhia tau tias nce los ntawm qhov tob hauv lub mantle, thaum cov ntaub ntawv txias dua mantle dab dej, tsim kom muaj qhov tam sim no convection. Nws tau xav tias hom tam sim no yog lub luag haujlwm rau kev txav ntawm cov phiaj xwm ntawm lub ntiaj teb crust.
Cov pa hluav taws xob pom nyob rau hauv cov txheej hauv ntiaj teb nyob qhov twg?
Cov cua kub los ntawm lub ntiaj teb lub hauv paus tsim cov dej ntws hauv cov txheej yas ntawm lub mantle (asthenosphere). Lub convection tam sim no maj mam txav cov tectonic daim hlau saum lawv nyob rau hauv ntau txoj kev.
Puas yog convection tam sim no hauv cov tub ntxhais sab nrauv?
Cov kws tshawb fawb paub tias cov tub ntxhais sab nraud yog kua thiab cov tub ntxhais sab hauv yog cov khoom zoo vim tias: S-yoj nres ntawm cov tub ntxhais sab hauv. Cov hlau nplaum muaj zog yog tshwm sim los ntawm convection nyob rau hauv cov kua txheej txheej. Convection tam sim no nyob rau hauv cov tub ntxhais sab nrauv yog vim cua sov los ntawm cov tub ntxhais tseem kub dua.
Cov pa hluav taws xob tshwm sim nyob qhov twg?
Convection currents on Earth tshwm sim nyob rau hauv lub mantle ntawm lub ntiaj teb.
Vim li cas thiaj li muaj kev sib hloov tam sim no?
Convection currents yog result of differential heating. Lub teeb (tsawg ntom), cov khoom sov tuaj thaum hnyav (ntau dua) cov khoom txias dab dej. Nws yog qhov kev txav no uas tsim cov qauv ncig hu ua convection tam sim no nyob rau hauv qhov chaw, hauv dej, thiab hauv lub mantle ntawmNtiaj teb.
