Cov txheej txheem:
Video: Cov dej tuaj yeem hloov pauv ntawm ib daim ntawv mus rau lwm qhov?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Teeb meem tuaj yeem hloov ntawm ib qho xeev rau lwm yog cua sov los yog txias. Yog hais tias dej khov (ib qho khoom) yog rhuab nws kev hloov rau dej (ib kua). Yog dej yog cua sov, nws kev hloov rau ncu (gas). Qhov no hloov hu ua BOILING.
Raws li txoj cai, peb tuaj yeem hloov daim ntawv dej li cas?
Daim ntawv hloov dej los ntawm cov kua rau roj los ntawm cov txheej txheem ntawm evaporation. Dej vapor kuj hloov rov qab mus rau cov kua los ntawm cov txheej txheem ntawm condensation. Condensation thiab evaporation yog ob txheej txheem uas tseem ceeb heev rau cov dej lub voj voog yuav tshwm sim.
Qhov thib ob, dab tsi yog tus txheej txheem ntawm kev hloov dej rau hauv dej khov hu ua? Thaum lub dej hloov los ntawm cov kua theem (uas yog, dej ) mus rau theem khoom (uas yog, dej khov ), cov txheej txheem yog lub npe hu ua khov. Ntawd yog, rau khov 1 mole ntawm dej ntawm 0 degrees Celsius, 6 kJ ntawm tshav kub poob rau ib puag ncig los yog muab tawm. Yog li ntawd, freezing yog exothermic txheej txheem.
Ib yam li ntawd, dej tuaj yeem hloov daim ntawv piav qhia?
Ib yam li txhua yam khoom, dej tau muaj nyob rau hauv peb qhov sib txawv daim ntawv , hu ua states: solid, liquid and gas. Lub xeev yuav hloov thaum cov khoom cua sov. Thaum cov khoom yog rhuab, nws hloov mus ua kua. Raws li cov kua, cov khoom muaj lub ntim ruaj khov, tab sis nws cov duab kev hloov los sau cov duab ntawm nws lub thawv.
Dab tsi yog 3 hom dej?
Dej tuaj yeem tshwm sim hauv peb lub xeev: khoom (dej), kua, lossis roj (vapor)
- Cov dej khov nab kuab yog dej khov. Thaum dej khov, nws cov molecules txav mus deb sib nrug, ua rau dej khov tsawg dua dej.
- Cov dej ua kua yog ntub thiab dej.
- Dej raws li ib tug gas-vapor yog ib txwm muaj nyob rau hauv cov huab cua nyob ib ncig ntawm peb.
Pom zoo:
Dab tsi yog qhov kev hloov pauv ntawm cov khoom uas txav ntawm qhov chaw mus rau qhov chaw ntawm - 12 m?
Kev piav qhia: Qhov kev txav ntawm ib qho khoom txav ntawm qhov chaw mus rau qhov chaw ntawm − 12 m yog 12 meters. Qhov kev ncua deb ntawm lub hauv paus chiv keeb mus rau qhov siab tshaj plaws txoj hauj lwm yog hu ua displacement ntawm ib yam khoom. Qhov siab tshaj plaws kev hloov pauv ntawm cov khoom nyob rau hauv ib nthwv dej yog hu ua crest thiab qhov tsawg kawg nkaus hloov pauv yog hu ua trough
Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
Quantile. txhua chav kawm muaj cov yam ntxwv sib npaug. Ib qho kev faib tawm ntau yog zoo haum rau cov ntaub ntawv faib tawm. Quantile muab tib tus lej ntawm cov ntaub ntawv muaj nuj nqis rau txhua chav kawm
Yuav ua li cas rau lub zog thaum nws hloov ntawm ib daim ntawv mus rau lwm qhov?
Kev hloov pauv hluav taws xob yog thaum lub zog hloov ntawm ib daim ntawv mus rau lwm qhov - zoo li hauv lub tshuab hluav taws xob uas hloov lub zog kinetic ntawm dej rau hauv hluav taws xob. Thaum lub zog tuaj yeem hloov pauv lossis hloov pauv, tag nrho lub zog tsis hloov pauv - qhov no yog hu ua kev txuag hluav taws xob
Dab tsi nthwv dej zoo li cov cuab yeej ntawm lub teeb ua rau nws hloov kev taw qhia thaum nws txav ntawm ib nrab mus rau lwm qhov?
Refraction
Dab tsi yog qhov tseem ceeb tshaj plaws uas yuav tsum muaj rau cov kua dej ntws hauv cov kav dej Dab tsi lwm yam cuam tshuam rau cov dej ntws?
Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom