Cov txheej txheem:
Video: Dab tsi yog ob yam cuab yeej uas cov kws tshawb fawb siv thaum ntxuav cov pob txha?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog li cov kws tshawb fawb siv bulldozers mus khawb cov pob zeb thiab av. 2 . Cov neeg ua haujlwm ces siv shovels, xyaum, rauj, thiab chisels kom tau qhov pob txha tawm hauv av.
Ib yam li ntawd, nws raug nug, dab tsi cov cuab yeej siv hauv paleontology?
Hauv Paleontologist's Field Kit
- Chisels. Fossils yog embedded rau hauv pob zeb - yog, nws yog sandstone thiab av nkos, tab sis nws yuav ua tau nyuaj li pob zeb!
- Walkie-talkie.
- GPS.
- Pob zeb rauj.
- Ntau probes thiab chisels.
- Txhuam.
- Swiss tub rog riam, diav rawg thiab diav.
- Vinac.
Tsis tas li ntawd, vim li cas cov kws tshawb fawb nrhiav cov pob txha? Cov kws tshawb fawb yuav tsum kawm cov pob txha los ntawm ntau qhov chaw ib puag ncig los tsim kom tiav daim duab ntawm cov tsiaj thiab cov nroj tsuag uas tau nyob ntawm lub sijhawm tshwj xeeb yav dhau los. Kev kawm ntawm pob txha thiab cov pob zeb uas muaj lawv tshwm sim ob qho tib si tawm ntawm qhov rooj thiab hauv chav kuaj.
Kuj kom paub yog, koj siv cov cuab yeej twg los nrhiav cov pob txha?
Cov cuab yeej rau Sau Fossils
- Lub kaus mom tawv.
- tsom iav kev nyab xeeb.
- Hnab looj tes tiv thaiv koj txhais tes.
- Rauj.
- Ib los yog ob chisels, nyiam dua ib qho loj thiab ib qho me me.
- Hnab ev ntawv los yog hnab ntaub uas nqa cov pob txha.
- Cov ntawv xov xwm qub los yog ib daim ntawv yob ntawm cov ntaub so ntswg tiv thaiv cov qauv tsis yooj yim.
- Magnifying iav lossis tes lens, 3 × rau 10 × lub zog.
Yuav ua li cas paleontologists nrhiav fossils?
1. QHOV TSEEB A FOSSIL . Dinosaur pob txha muaj nyob rau hauv sedimentary pob zeb (pob zeb ua los ntawm sediment deposited nyob rau hauv txheej). Kom paub qhov twg mus yos hav zoov rau dinosaur pob txha , paleontologists yuav tsum nrhiav cov pob zeb sedimentary uas tsim thaum lub sij hawm uas tsis yog-avian dinosaurs nyob thiab tuag.
Pom zoo:
Cov cuab yeej dab tsi uas tus kws tshawb fawb marine siv?
Qee cov cuab yeej siv los kawm txog biology ntawm cov kab mob hauv hiav txwv muaj xws li cov cuab yeej siv xws li plankton nets thiab trawls, cov khoom siv hauv qab dej xws li lub koob yees duab yees duab, tsheb khiav deb, hydrophones thiab sonar, thiab kev taug qab txoj hauv kev xws li satellite cim npe thiab kev tshawb fawb yees duab
Dab tsi yog cov cuab yeej lossis cov ntaub ntawv uas tus Kws Tshawb Fawb xav tau los txheeb xyuas cov ntaub ntawv nug?
Cov ntaub ntawv raug nug hauv chav kuaj ua txhaum cai yog nruab nrog lub tshuab ntsuas ntsuas, ntsuas cov duab digital, infrared thiab ultraviolet lub teeb ci, cov cuab yeej tshuaj ntsuam video thiab cov cuab yeej tshwj xeeb suav nrog cov khoom siv hluav taws xob tshawb pom electrostatic (EDD) thiab cov khoom siv los ua chemistry
Cov txheej txheem dab tsi uas tus kws tshawb fawb siv los tsim ntau cov ntawv luam ntawm DNA xav tau sau rau hauv daim ntawv dawb paug 1?
Molecular Cloning. Cloning tso cai rau tsim ntau cov ntawv luam ntawm cov noob, qhia cov noob, thiab kawm txog cov noob tshwj xeeb. Yuav kom tau txais cov DNA tawg rau hauv cov kab mob hauv cov kab mob hauv daim ntawv uas yuav tau theej lossis nthuav tawm, cov khoom tawg yog thawj zaug tso rau hauv plasmid
Cov yam ntxwv dab tsi uas cov kws tshawb fawb siv los faib cov pob zeb?
Feem ntau cov zaub mov tuaj yeem ua tus cwj pwm thiab cais los ntawm lawv lub cev tshwj xeeb: hardness, luster, xim, strrea Feem ntau cov zaub mov tuaj yeem ua tus yam ntxwv thiab cais los ntawm lawv lub cev tshwj xeeb: hardness, luster, xim, streak, tshwj xeeb gravity, cleavage, tawg, thiab tenacity
Cov pob txha pob txha tau siv li cas los txhais thiab txheeb xyuas qhov kev faib tawm ntawm lub sijhawm geology?
Index fossils yog siv nyob rau hauv lub formal architecture ntawm geologic lub sij hawm rau txhais lub hnub nyoog, epochs, lub sij hawm, thiab eras ntawm lub sij hawm geological. Cov pov thawj rau cov xwm txheej no tau pom nyob rau hauv cov ntaub ntawv fossil nyob qhov twg muaj qhov ploj ntawm pawg loj ntawm cov tsiaj hauv ib lub sijhawm luv luv ntawm geologically