Video: Dab tsi yog cov pov thawj hauv kev txhawb nqa ntawm continental drift txoj kev xav?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov pov thawj rau continental drift
Wegener paub tias cov nroj tsuag fossil thiab tsiaj xws li mesosaurs, cov tsiaj reptiles dej tshiab pom tsuas yog South America thiab Africa thaum lub sijhawm Permian, tuaj yeem pom muaj ntau yam. teb chaws . Nws kuj tau sib tw pob zeb ntawm ob sab ntawm Dej Hiav Txwv Atlantic zoo li cov duab dhos ua si.
Tsuas yog li ntawd, cov pov thawj dab tsi txhawb txoj kev xav ntawm Pangea?
Cov pov thawj ntawm hav zoov Ntxiv pov thawj rau Pangea muaj nyob rau hauv geology ntawm cov teb chaws uas nyob ib sab, nrog rau kev sib piv geological tiam sis ntawm sab hnub tuaj ntug dej hiav txwv ntawm South America thiab sab hnub poob ntug dej hiav txwv ntawm Africa. Lub polar ice cap ntawm Carboniferous Lub Sijhawm npog sab qab teb kawg ntawm Pangea.
Ib yam li ntawd, thaum twg txoj kev xav ntawm continental drift tau txais? Xyoo 1912
Hais txog qhov no, cov pov thawj ntawm lub cev muaj dab tsi los txhawb txoj kev xav ntawm cov phiaj xwm tectonic thiab kev sib tw sab av loj?
Phaj tectonic txoj kev xav tau pib thaum xyoo 1915 Alfred Wegener npaj nws txoj kev xav ntawm "continental drift." Wegener tau npaj siab tias cov teb chaws tau plav dhau los ntawm cov dej hiav txwv dej hiav txwv, uas yuav piav qhia tias vim li cas cov txheej txheem ntawm ntau cov ntug hiav txwv dej (xws li South America thiab Africa) zoo li lawv haum ua ke zoo li kev sib tw.
Dab tsi yog 3 hom continental drift?
Muaj peb hom ntawm phaj tectonic ciam teb: divergent, convergent, thiab hloov phaj ciam teb. Daim duab no qhia peb lub ntsiab hom ntawm daim ntawv ciam teb: divergent, convergent, thiab transform. Duab los ntawm US Geological Survey.
Pom zoo:
Dab tsi pov thawj siv cov duab ntawm lub dav hlau sib koom ua pov thawj cov khoom geometric?
Cov ntaub ntawv pov thawj uas siv cov duab ntawm lub dav hlau sib koom ua pov thawj geometric zog yog hu ua trigonometric
Cov pov thawj dab tsi txhawb nqa endosymbiosis?
Thawj daim ntawv pov thawj uas yuav tsum tau pom los txhawb qhov kev xav ntawm endosymbiotic yog seb puas los yog tsis yog mitochondria thiab chloroplasts muaj lawv tus kheej DNA thiab yog tias cov DNA no zoo ib yam li cov kab mob DNA. Qhov no tom qab ntawd tau ua pov thawj tias muaj tseeb rau DNA, RNA, ribosomes, chlorophyll (rau chloroplasts), thiab protein synthesis
Cov pov thawj fossil twg txhawb nqa lub tswv yim ntawm kev sib tw sab av loj?
Daim duab 6.6: Wegener siv cov pov thawj fossil los txhawb nws qhov kev xav ntawm sab av loj. Cov pob txha ntawm cov kab mob no muaj nyob hauv thaj av uas tam sim no nyob deb. Wegener tau hais tias thaum cov kab mob tseem muaj sia nyob, cov av tau koom nrog thiab cov kab mob tau nyob ib sab
Leej twg yog thawj tus txhawb nqa ntawm atomic txoj kev xav?
Lub bust ntawm Democritus (los yog Democrites), uas tau los nrog lub tswv yim ntawm indivisible atoms. Cov neeg paub ntxov tshaj plaws ntawm txhua yam zoo li niaj hnub atomic txoj kev xav yog tus neeg Greek thaum ub Democritus. Nws tau thov kom muaj lub neej ntawm indivisible atoms raws li cov lus teb rau qhov kev sib cav ntawm Parmenides thiab cov paradoxes ntawm Zeno
Dab tsi yog cov pov thawj ntawm continental drift txoj kev xav?
Kev nthuav dav ntawm Permo-Carboniferous glacial sediments nyob rau hauv South America, Africa, Madagascar, Arabia, Is Nrias teb, Antarctica thiab Australia yog ib qho ntawm cov pov thawj tseem ceeb rau txoj kev xav ntawm continental drift