Pumice solidify qhov twg?

Cov txheej txheem:

Pumice solidify qhov twg?
Pumice solidify qhov twg?

Video: Pumice solidify qhov twg?

Video: Pumice solidify qhov twg?
Video: What are pumice rocks and pumice rafts? 2024, Kaum ib hlis
Anonim

Pumice yog lub teeb heev, pob zeb tawg pob zeb uas tshwm sim thaum tawg tawg. Thaum lub sij hawm eruption, volcanic gases yaj nyob rau hauv cov kua ib feem ntawm verz viscous magma nthuav heev sai sai ua npuas ncauj los yog froth; cov kua ib feem ntawm cov froth ces solidifies sai sai rau iav ncig cov npuas npuas

pumice hloov mus ua dab tsi?

Raws li pob zeb pumice compacts ntawm nws lub hnab ntim cua, nws dhau los ua denser thiab hnyav dua, dhau los ua ib hom pob zeb sib txawv, ua ke nrog lwm cov pob zeb los ua metamorphic pob. Cov pob zeb no suav nrog schist, slate thiab gneiss.

txheej txheem ntawm pumice yog dab tsi?

Pumice yog ib hom pob zeb hluav taws kub tawg, tsim thaum lava nrog cov ntsiab lus siab ntawm dej thiab roj tawm ntawm lub roob hluav taws Raws li cov pa npuas khiav, cov lava ua frothy. Thaum cov lava no txias thiab tawv, qhov tshwm sim yog cov khoom siv pob zeb lub teeb heev uas muaj cov npuas me me ntawm cov pa roj.

lava harden ua dab tsi?

Thaum lava tawm ntawm lub roob hluav taws thiab khov rau hauv extrusive igneous pob zeb, tseem hu ua volcanic, lub pob zeb txias sai heev. Crystals nyob rau hauv cov pob zeb volcanic yog me me vim tias lawv tsis muaj sij hawm ntau los tsim kom txog thaum lub pob zeb txias tag nrho, uas nres qhov kev loj hlob siv lead ua.

Pumice yog pob zeb nyuaj lossis mos?

Key Takeaways: Pumice Rock

Pumice is an igneous rock that forms when magma dheev depressurizes and cools. Qhov tseem ceeb, pumice yog ib qho khoom ua npuas ncauj. Nws yog lub teeb txaus kom ntab saum dej kom txog thaum nws dhau los ua dej.

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