Ungazi kanjani ukuthi i-meteorite

Ama-meteorite yilawo matshe amakhulu akwazi ukungena emkhathini womhlaba agcine ewela phezu komhlaba. Nokho, lapho sithola idwala elikhulu elinezici ezithile, kuba nzima ukwazi kanjani ukuthi i-meteorite noma idwala.

Ngalesi sizathu, sizonikezela lesi sihloko ukuze sikutshele ukuthi wazi kanjani ukuthi lokho okutholile kuyi-meteorite noma cha nokuthi yiziphi izici zayo nomsuka wayo.

Ungazi kanjani ukuthi i-meteorite

Izingcezu zama-meteorite ziwela emhlabeni wethu njalo zivela emkhathini. Ngokuvamile ziwela olwandle noma ezindaweni ezingasetshenziswanga, ngakho-ke akunakwenzeka ukuthola ucezu lwe-asteroid endaweni ethile. Uma ubona itshe ensimini elikuthakaselayo, ungasebenzisa la maqhinga ukuze ubone ukuthi akuyona yini into ephuma kulo mhlaba.

Umazibuthe uzoheha imeteorite eyi-ferromagnetic. Uma isondela kukazibuthe futhi inganamatheli, cishe akuyona i-ferromagnetic meteorite. Ama-meteorite kuphela anamathela kuzibuthe abhekwa njenge-ferromagnetic.

I-Regmaglypts iwukubumba phezu kwamatshe amnyama noma ansundu. Cishe wonke amatshe amnyama anombala omnyama kunamatshe avamile futhi anobumba ebusweni bawo. Isisindo singesinye isici esivame kakhulu. Zisinda kakhulu, zinesisindo phakathi kuka-4 no-8 amagremu cubic centimeter ngayinye.

Uma ungakaqiniseki, ungapholisha idwala nge-sandpaper esuselwe emanzini noma enamathelisiwe. Ama-meteorite ngokuvamile abukeka njengensimbi uma epholishwa. Uma i-asteroid isitholakele, kufanele iye emnyangweni we-geology ukuze ihlaziywe. Ukuhlola kunquma ukuthi i-asteroid ngempela yini okufanele ibe yiyo (insalela ye-asteroid eyawa). Uma i-asteroid iphumelela izivivinyo ezingenhla eziyi-9, izothathwa njengeyiqiniso.

Phakathi kweMars neJupiter kunesikhala lapho abanye bakholelwa ukuthi kwaba khona iplanethi eyabhujiswa ekubunjweni kwesimiso sonozungezilanga. Izigidi zamatshe amancane namatshe kucatshangwa ukuthi zakha ibhande le-asteroid, ngemuva kwalokho okucatshangwa ukuthi izigidi zezingcezu zemfucumfucu. Kwesinye isikhathi enye yalezi zingcezu ze-asteroid iwela emzileni bese ishayisana noMhlaba.

Izici zokufunda ukuthi wazi kanjani ukuthi i-meteorite

uqweqwe lwe-fusion

Izinto ezimnyama ezizungeze i-meteorite, uma zingahlukananga ngenxa yomthelela, yikho okuhlukanisa i-meteorite kwezinye izingcezu esingazithola. Uqweqwe lwama-meteorite angamatshe luvamise ukushuba kunalolo lwama-meteorite ensimbi, alukho ugqinsi olungaphezu kwe-1 mm.

Amagobolondo e-stone meteorites ahlanganisa i-amorphous silica (uhlobo lwengilazi) exutshwe ne-magnetite, ephuma kuma-silicates ne-iron akha ama-stoney meteorite amaningi.

Ungqimba lwangaphandle lwama-meteorite ensimbi ngokuyisisekelo lwakhiwe i-iron oxide ebizwa ngokuthi i-magnetite, ngokuvamile eyi-submillimeter. Zivame ukuthinteka yizici ezihlukahlukene zomkhathi, futhi uma ziyekwa ukuhlala phansi isikhathi eside zinganakwa, zizobukeka zigqwalile.

I-Shrinkage Fracture kanye ne-Orientation

Ziyizakhiwo esizibona oqweqweni lwama-meteorite angamatshe awenza abonakale eqhekekile. Zibangelwa ukuphola ngokushesha koqweqwe lomhlaba, kusukela ezingeni lokushisa eliphakeme kakhulu elidalwe ukuklwebhana kuya ekushiseni okulinganayo komkhathi, ngezinye izikhathi ngaphansi kwezingaqhwa. Le mifantu iyisici esibalulekile esimweni sezulu esilandelayo sama-meteorite.

Ama-meteorite asemkhathini angazungeza noma agcine ukunyakaza okulandelanayo, futhi njengoba edlula emkhathini angashintsha kungazelelwe noma ahlale enyakaza aze afinyelele phansi. Ngale ndlela ukubukeka kwakho kungahluka.

Ama-meteorite ajikelezayo ngesikhathi sekwindla ngeke abe nephethini yesimo sezulu ekhethwayo futhi ngenxa yalokho azoba ngokungajwayelekile. Ama-meteorite angaphenduki azoba nomumo ozinzile ngesikhathi sokuwa, ukwakha ikhoni enemigqa yokuguguleka okukhethekile.

ama-angular meteorites

Ingaphezulu lama-meteorite angamadwala aveza lezi zinhlobo zama-angular, phakathi kuka-80-90º, nama-vertices ayindilinga kanye nemiphetho. Ngokuvamile zinikezwa ngama-polylines.

Ama-Regmaglyphs: zingamanotshi enziwe ebusweni ngendlela eyindilinga, ayi-conical ekwindla ngenxa yokuziphatha komoya. Ama-meteorite ensimbi yiwona avame kakhulu.

Imigqa yendiza: Ngesikhathi sekwindla, ingaphezulu le-meteorite lishisa lize lifike emazingeni okushisa aphezulu, okubangela ukuthi izinto zincibilike futhi ziziphathe njengoketshezi. Ngesikhathi sokuqhuma kwe-meteorite, uma ishaya, inqubo yokushisisa nokuncibilika iyama kungazelelwe. Amaconsi ayaphola kuqweqwe, enze imigqa yokundiza. Ngaphezu kokwakheka kwayo, ukuma kwayo kunqunywa ngokuyinhloko ukuma kwayo nokujikeleza.

umbala kanye powder

Uma ama-meteorite emasha, ngokuvamile amnyama, futhi ama-fusion crusts awo angabonisa ukugeleza kanye nemininingwane esiza ukuwabona. Ngemva kokulala phansi isikhathi eside, i-meteorite ishintsha umbala, i-fusion crust iyaphela, futhi imininingwane iyanyamalala. Insimbi ekumeteorite, njengensimbi ekumathuluzi, ingafakwa oksijini ngenxa yesimo sezulu.. Njengoba insimbi eyinsimbi i-oxidize, ingcolisa i-matrix yangaphakathi nengaphandle ledwala. Qala ngamachashaza abomvu noma awolintshi kuqweqwe olumnyama oluncibilikile. Ngokuhamba kwesikhathi, lonke itshe lizoba nsundu ngokugqwalile. I-fusion crust isabonakala, kodwa ayisekho emnyama.

Uma sithatha ucezu futhi silihlikihla ngemuva kwethayela, uthuli olukhiphayo luzosinika umkhondo: uma lunsundu, sisola i-meteorite, kodwa uma ibomvu, sibhekene ne-hematite. Uma kumnyama kusho ukuthi yimagnetite.

Ezinye izici ezijwayelekile

Ngisho nokucabangela zonke lezi zici ezizihlukanisa kwamanye amadwala azungezile, ama-meteorite anezinye izici okufanele zicatshangelwe:

• I-meteorite ayiqukethe i-quartz
• Ama-meteorite awanayo imibala eqinile noma ekhanyayo, ngokuvamile amnyama noma ansundu ngenxa yokuthi ashintshwe umoya-mpilo.
• Imigqa evela kwamanye ama-meteorite ngokuvamile imhlophe futhi ayinawo umbala.
• Awekho amabhamuza omoya noma imigodi kuma-meteorite, ama-95% ama-meteorite avame ukuba yi-slag.
• Ama-meteorite e-metallic kanye nama-meteorite ensimbi akhangwa kakhulu odonsa.

Ngithemba ukuthi ngalolu lwazi ungafunda kabanzi mayelana nokuthi ungazi kanjani ukuthi lokho okutholile kuyi-meteorite noma cha.