Video: Cov pov thawj fossil twg txhawb nqa lub tswv yim ntawm kev sib tw sab av loj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Daim duab 6.6: Wegener siv fossil pov thawj rau kev txhawb nqa nws continental drift hypothesis . Cov pob txha ntawm cov kab mob no muaj nyob rau thaj av uas tam sim no nyob deb. Wegener tau hais tias thaum cov kab mob muaj sia nyob, cov av tau koom nrog thiab cov kab mob nyob ib sab.
Ib yam li ntawd ib tug yuav nug, cov pov thawj fossil txhawb lub tswv yim ntawm kev caij nkoj hauv av txhua qhov uas siv tau?
Cov tswv yim uas continental drift tau tshwm sim tuaj los ntawm kev kawm ntawm pob txha nrhiav tau los ntawm ntau qhov chaw ntawm lub ntiaj teb. Hauv qab no Cov pov thawj fossil txhawb nqa lub tswv yim ntawm kev ya mus rau sab av loj -Glossopteris: pob txha Ntawm cov noob fern Glossopteris muaj nyob thoob plaws tag nrho ntawm sab qab teb teb chaws.
Tsis tas li ntawd, dab tsi yog thawj qhov pov thawj ntawm continental drift? Alfred Wegener thawj zaug tau nthuav tawm nws qhov kev xav rau German Geological Society thaum Lub Ib Hlis 6, 1912. Nws qhov kev xav yog tias cov teb chaws tau tsim ib thaj av ib zaug, hu ua Pangaea, ua ntej tawg thiab ntws mus rau lawv qhov chaw tam sim no.
Dhau li saum toj no, dab tsi yog pov thawj rau continental drift?
Cov ntaub ntawv pov thawj rau sab av loj drift Wegener paub qhov ntawd pob txha cov nroj tsuag thiab tsiaj xws li mesosaurs, cov tsiaj reptiles uas tsuas yog South America thiab Africa thaum lub sij hawm Permian, tuaj yeem pom nyob rau ntau lub tebchaws. Nws kuj tau sib tw pob zeb ntawm ob sab ntawm Dej Hiav Txwv Atlantic zoo li cov duab dhos ua si.
Lub teb chaws twg muaj cov teb chaws thee uas muab pov thawj rau kev ya raws teb chaws?
Tshawb xyuas txhua yam uas siv tau. Teb chaws Africa Eurasia Antarctica South America North America.
Pom zoo:
Dab tsi yog lub tswv yim ntawm kev txhawb nqa ntawm kev sib cais ntawm kev sib deev?
Kev txhawb zog yog cov txheej txheem los ntawm kev xaiv ntuj tsim kom muaj kev sib cais ntawm kev sib deev. Kev txhawb zog tuaj yeem tshwm sim raws li hauv qab no: Thaum ob pawg neeg uas tau khaws cia sib nrug, rov qab los rau hauv kev sib cuag, qhov kev sib cais ntawm cov menyuam yaus yuav ua tiav lossis tsis tiav. Yog tias nws ua tiav, speciation tau tshwm sim
Dab tsi yog cov pov thawj hauv kev txhawb nqa ntawm continental drift txoj kev xav?
Cov ntaub ntawv pov thawj rau thaj av 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 nyob rau ntau lub tebchaws. Nws kuj tau sib tw pob zeb ntawm ob sab ntawm Dej Hiav Txwv Atlantic zoo li cov duab dhos ua si
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
Dab tsi yog qhov txawv ntawm kev tshawb fawb paradigm thiab lub tswv yim lub tswv yim?
Lub theoretical moj khaum muab ib tug dav sawv cev ntawm kev sib raug zoo ntawm tej yam nyob rau hauv ib tug muab phenomenon. Lub hauv paus ntsiab lus, ntawm qhov tod tes, embodies cov kev taw qhia tshwj xeeb uas qhov kev tshawb fawb yuav tsum tau ua. Lub tswvyim ntawm lub tswvyim tseem hu ua kev tshawb fawb paradigm
Koj tuaj yeem ua pov thawj li cas 2 daim duab peb sab zoo sib xws siv lub kaum sab xis sab SAS zoo sib xws postulate?
SAS Similarity Theorem hais tias yog ob sab hauv ib daim duab peb sab yog proportional rau ob sab hauv lwm daim duab peb sab thiab lub kaum sab xis nyob rau hauv ob qho tib si congruent, ces ob daim duab peb sab zoo ib yam. Ib qho kev hloov pauv zoo sib xws yog ib lossis ntau qhov kev hloov pauv tsis tu ncua ua raws li kev dilation