Dej khov tsawg dua dej. Thaum cov kua dej khov, nws cov khoom nthuav dav xws li nce hauv ntim. Yog li ntawd, nws yuav tsawg dua li dej. Qhov no ua rau cov dej khov nab kuab ntab saum dej vim nws muaj qhov ntom ntom dua piv rau cov dej ua kua los ntawm kev nthuav dav ntawm nws cov khoom.
Vim li cas icebergs ntab?
Icebergs yog tuab tuab ntawm cov dej khov uas ntab hauv dej hiav txwv. Qhov laj thawj yog vim li cas cov dej khov ntab thiab sib zog dua dej yog tias qee qhov dej khov muaj qhov chaw ntau dua li cov dej tib yam. Qhov no muaj feem xyuam rau cov yam ntxwv ntawm hydrogen bonds. Cov dej khov no ntab tawm ntawm ntug dej hiav txwv Otago.
Qhov twg yog qhov zoo tshaj plaws piav qhia qhov siab ntawm cov dej?
Lub siab nro ntawm dej yog vim kev sib cuam tshuam molecular uas muaj nyob nruab nrab ntawm cov dej molecules. Muaj kev sib koom ua ke ntawm cov molecules hauv dej. Qhov kev kub ntxhov siab no kuj yog vim qhov polarity ntawm cov dej molecule.
Qhov twg zoo piav qhia yog vim li cas dej thiaj li muaj cua sov?
Dej lub peev xwm kub kub yogkhoom tsim los ntawm hydrogen bonding ntawm cov dej molecules. Thaum tshav kub yog absorbed, hydrogen bonds tawg thiab dej molecules tuaj yeem txav tau yooj yim. Thaum qhov kub ntawm cov dej txo qis, cov hydrogen bonds tsim thiab tso tawm ntau lub zog.
Qhov zoo tshaj plaws piav qhia vim li cas dej thiaj tuaj yeem lo rau ntawmsab yog iav?
Qhov twg zoo tshaj piav qhia tias yog vim li cas dej thiaj tuaj yeem "ko" rau ntawm iav? … Cov nplaum nplaum muaj zog muaj nyob nruab nrab ntawm iav thiab dej molecules.
