Video: Dab tsi yog qhov txawv ntawm effusive thiab explosive eruption?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Effusive eruptions - magma nce los ntawm qhov chaw thiab ntws tawm ntawm lub roob hluav taws raws li cov kua nplaum hu ua lava. Kev tawg tawg - magma yog torn sib nrug thaum nws nce thiab nce mus txog saum npoo ntawm daim ntawv hu ua pyroclasts. Seb lub roob hluav taws yuav tawg explosively los yog effusively yog txiav txim los ntawm lub xub ntiag ntawm npuas.
Ib yam li ntawd, koj tuaj yeem nug, dab tsi yog yam ntxwv ntawm kev tawg tawg?
Kev tawg tawg tshwm sim qhov twg txias dua, viscous magmas (xws li andesite) ncav cuag qhov chaw. Cov pa hluav taws xob tawg tsis tuaj yeem khiav tawm tau yooj yim, yog li lub siab tuaj yeem tsim kom txog thaum cov pa tawg tawg tawg pob zeb thiab lava tawg rau saum huab cua! Lava ntws yog ntau tuab thiab nplaum, yog li tsis txhob ntws downhill li yooj yim.
Ib sab saum toj no, hom magma ua rau tawg tawg? Kev tawg tawg ib txwm pib nrog qee hom kev thaiv nyob rau hauv lub qhov tsua ntawm lub roob hluav taws uas tiv thaiv kev tso tawm ntawm cov gases daig hauv cov dej khov heev thiab cov rhyolitic magma. Lub siab viscosity ntawm cov ntaub ntawv no ntawm magma tiv thaiv kev tso tawm ntawm cov pa gases.
Tsis tas li ntawd, qhov sib txawv ntawm cov hluav taws kub tawg thiab cov hluav taws tsis tawg yog dab tsi?
Volcanoes yog tsim thaum magma nce mus rau lub ntiaj teb saum npoo vim nws tsis tshua ntom dua li cov pob zeb nyob ib puag ncig. Volcanic kev tawg tuaj yeem ua tau tsis tawg los yog tawg nyob ntawm qhov viscosity ntawm magma. Tsis-explosive hom erruptions feem ntau tsim ntau hom lava, xws li a'a, pāhoehoe thiab hauv ncoo lavas.
Puas yog daim ntaub thaiv hluav taws kub effusive lossis tawg?
Kev tawg Nyob rau hauv cov ntaub thaiv npog volcanoes tsuas yog tawg yog tias dej qee yam nkag mus rau hauv lub qhov cua, txwv tsis pub lawv yog cov cim los ntawm qhov tawg qis uas tsim cov cinder cones thiab spatter cones ntawm qhov cua, txawm li cas los xij, 90% ntawm lub roob hluav taws yog lava ntau dua li cov khoom siv pyroclastic.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov pom tseeb qhov loj thiab qhov ntsuas qhov ntsuas qhov tseeb?
Dab tsi yog qhov txawv ntawm qhov pom tseeb thiab qhov tseeb? Pom meej qhov loj npaum li cas yog qhov ci ntawm lub hnub qub tshwm los ntawm lub ntiaj teb thiab nyob ntawm qhov ci thiab qhov deb ntawm lub hnub qub. Qhov loj npaum li cas yog qhov ci ntawm lub hnub qub yuav tshwm sim los ntawm tus qauv nyob deb
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
Integers thiab floats yog ob yam sib txawv ntawm cov ntaub ntawv tus lej. Ib tus lej (feem ntau hu ua anint) yog tus lej tsis muaj tus lej lej. Float isa floating-point number, uas txhais tau hais tias nws yog tus lej uas muaj tus lej lej. Floats siv thaum xav tau ntau dua
Dab tsi yog qhov sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas thiab ntau qhov sib piv?
6. (2 lub cim) Qhov sib txawv ntawm cov kab sib txuas (kev sib piv) thiab ntau qhov sib piv yog dab tsi? Cov kab sib xyaw ua ke yog npaj sib piv; uas yog, tshwj xeeb txhais tau tias yog ua ke nyob rau hauv ntau txoj kev thiab contrasted nrog rau lwm yam kev sib txuas ntawm txhais tau tias
Dab tsi yog qhov txawv ntawm instantaneous thiab nruab nrab ceev dab tsi yog qhov piv txwv loj tshaj ntawm kev ceev ceev?
Qhov nruab nrab ceev yog qhov ceev nruab nrab ntawm lub sijhawm. Instantaneous ceev yuav yog qhov ceev txhua qhov muab tam sim ntawd hauv lub sijhawm ntawd, ntsuas nrog lub ntsuas ntsuas lub sijhawm
Dab tsi yog qhov txawv ntawm microevolution thiab macroevolution Dab tsi yog qee qhov piv txwv ntawm txhua tus?
Microevolution vs. Macroevolution. Piv txwv ntawm cov kev hloov microevolutionary no yuav suav nrog kev hloov ntawm hom xim lossis loj. Macroevolution, piv txwv li, yog siv los hais txog kev hloov pauv ntawm cov kab mob uas tseem ceeb txaus uas, dhau sijhawm, cov kab mob tshiab yuav raug suav tias yog hom tshiab nkaus xwb