Video: Yuav ua li cas koj xam radiometric dating?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Radioactive Dating . log F = (N/H)log(1/2) qhov twg: F = feem seem N = pes tsawg xyoo thiab H = ib nrab neej. Txhawm rau txiav txim siab cov feem tseem tshuav, peb yuav tsum paub ob qho tib si tam sim no thiab cov nyiaj tam sim no thaum cov pob zeb tsim.
Dhau li ntawm no, radiometric kev sib tham ua li cas?
Xov tooj cua sib tham yog ib txoj kev siv rau hnub tim pob zeb thiab lwm yam khoom raws li qhov paub txog kev lwj ntawm xov tooj cua isotopes. Tus nqi lwj yog xa mus xov tooj cua lwj, uas yog txheej txheem los ntawm qhov tsis ruaj tsis khov atomic nucleus poob lub zog los ntawm kev tso hluav taws xob.
Tsis tas li ntawd, cov ntsiab lus twg yog siv hauv xov tooj cua sib tham?
| Isotopes | Ib nrab neej (xyoo) | |
|---|---|---|
| Uranium-235 | Cov-207 | ua 704mn |
| Rubidium-87 | Strontium-87 | 48,8bn ua |
| Potassium - 40 | Argon-40 | 1.277 billion |
| Cov pa roj carbon-14 | Nitrogen-14 | 5730 ± 40 |
Ib yam li ntawd, koj suav hnub isochron li cas?
Cov Txoj kev isochron . Qhov no kev sib npaug muaj daim ntawv y = b + xm, uas yog txoj kab ncaj nraim ntawm x-y coordinates. Txoj kab nqes m yog sib npaug rau (elwj t - 1), thiab qhov cuam tshuam yog sib npaug rau (D / S)0. Lub sij hawm no hu ua qhov pib piv.
Peb yuav ua li cas thiaj paub tias kev sib tham xov tooj cua yog qhov tseeb?
Peb paub nws yog raug vim radiometric sib tham yog nyob ntawm qhov xov tooj cua kev lwj ntawm cov isotopes tsis ruaj khov. Piv txwv li, lub caij Uranium muaj nyob ua ib qho ntawm ob peb isotopes, qee qhov tsis ruaj khov. Thaum ib qho tsis ruaj tsis khov Uranium (U) isotope decays, nws hloov mus ua ib qho isotope ntawm lub caij Lead (Pb).
Pom zoo:
Yuav ua li cas koj xam tus qauv sib txawv ntawm PMP?
Cov mis siv nyob rau hauv PMBOK rau tus qauv sib txawv yog yooj yim. Nws tsuas yog (P-O) / 6. Qhov ntawd yog qhov pessimistic kev ua ub no kwv yees rho tawm qhov kev kwv yees qhov kev xav tau muab faib los ntawm rau. Qhov teeb meem yog qhov no nyob rau hauv tsis muaj txoj kev zoo los yog daim ntawv tsim ib qho kev ntsuas ntawm tus qauv deviation
Qhov twg hauv qab no yog lub ntsiab lus ntawm radiometric dating?
Radiometric dating nyob rau hauv American English noun. txhua txoj kev los txiav txim lub hnub nyoog ntawm lub ntiaj teb cov ntaub ntawv los yog cov khoom ntawm cov organic keeb kwm raws li kev ntsuas ntawm ib tug luv luv-lived radioactive ntsiab los yog tus nqi ntawm ib tug ntev-nyob radioactive caij ntxiv rau nws cov khoom lwj
Yuav ua li cas yog radioactive isotopes siv nyob rau hauv radiometric dating?
Radiometric dating yog ib txoj hauv kev siv rau hnub tim pob zeb thiab lwm yam khoom raws li qhov paub txog kev puas tsuaj ntawm cov hluav taws xob isotopes. Nrog radiocarbon sib tam, peb pom tias carbon-14 lwj mus rau nitrogen-14 thiab muaj ib nrab-lub neej ntawm 5,730 xyoo
Yuav ua li cas koj xam lub sij hawm nws yuav siv sij hawm mus ncig teb chaws?
Kwv yees seb koj yuav mus sai npaum li cas ntawm koj qhov kev mus ncig. Tom qab ntawd, faib koj qhov kev ncua deb ntawm koj qhov nrawm. Qhov no yuav muab rau koj anestimation ntawm koj lub sijhawm mus ncig. Piv txwv li, yog tias koj mus ncig yog 240 mais thiab koj yuav tsav 40 mais ib teev, koj lub sijhawm yuav yog 240/40 = 6hours
Yuav ua li cas koj xam lub sij hawm nws yuav siv ib yam khoom los poob?
Ntsuas qhov deb ntawm qhov khoom yuav poob hauv ko taw nrog tus pas ntsuas lossis ntsuas daim kab xev. Faib qhov kev ncua deb los ntawm 16. Piv txwv li, yog tias cov khoom yuav poob 128 ko taw, faib 128 los ntawm 16 kom tau 8. Xam cov square root ntawm cov kauj ruam 2 los nrhiav lub sij hawm nws yuav siv cov khoom poob hauv vib nas this