Isiseko soMhlaba

Iimpawu zomxholo woMhlaba

I-nucleus yeyokugqibela Umaleko woMhlaba. Ikwaziwa njengegama le-endosfos kwaye sishushu esishushu esisembindini weplanethi. Ekubunjweni kwayo sinokubona zombini isiseko esiqinileyo esingaphakathi kunye nomphandle ongaphandle olulwelo. Ngenxa yokuhambisa ombane okuveliswe ngumahluko koxinano lwezixhobo kwi undoqo womhlaba i Imagnethi yomhlaba.

Kule nqaku siza kubona uhlalutyo olupheleleyo malunga nomhlaba kunye nokubaluleka kwawo.

Imvelaphi kunye nokwakheka

Iimpawu zomxholo woMhlaba

Isiseko savela emva kweplanethi. Xa uMhlaba wabumba malunga ne-4.500 yezigidigidi zeminyaka eyadlulayoYayiyibhola nje efanayo yelitye elishushu. Kancinci kancinci yayiphethwe kukubola kwe-radioactive kwaye ngobushushu obabunikezelwe ekudalweni kweplanethi kwabangela ukuba bushushu ngakumbi ukuya kwinqanaba lokunyibilika kwesinyithi. Lo mzuzu xa uMhlaba wafikelela kula maqondo obushushu wabizwa ngokuba yintlekele yentsimbi. Izinto ezinyibilikisiweyo ezaziseliweni kwaye yonke into enamatye yayihamba kakhulu kwaye inesantya esingaphezulu. Njengomphumo wale ntshukumo yezinto ezishinyeneyo ezifana namanzi, umoya kunye neesilicithi, bazenza ingubo yoMhlaba.

Ngokuchasene noko, i-denser kunye nezinto ezinzima ezifana nesinyithi, i-nickel kunye ezinye izinyithi ezinzima zazinako ukutsala amandla omxhuzulane woMhlaba ukuya kwiziko. Ngale ndlela, into esiyaziyo njenge-nucleus yokuqala yomhlaba yakudala yenziwa. Le nkqubo yaziwa ngokwahlula iplanethi kwaye kulapho siqala khona ukubona ukuba uMhlaba wenziwe ngamanqanaba ahlukeneyo aneempawu ezahlukeneyo kunye nokwakheka.

Ukwakhiwa kwesiseko soMhlaba

Isiseko somhlaba

Njengoko sisazi, i Uqweqwe lomhlaba kwaye ingubo ityebile kwizimbiwa. Nangona kunjalo, undoqo womhlaba ubunjwe ubukhulu becala ngentsimbi kunye ne-nickel. Sikwafumana nezinto ezinyibilika kwisinyithi ekuthiwa zii-siderophiles. Ezi zinto aziqhelekanga kwaphela kuqweqwe kwaye, ngenxa yoko, zibizwa ngokuba zizinyithi ezixabisekileyo. Kwezi zintsimbi zixabisekileyo sifumana icobalt, igolide neplatinam.

Enye into ephambili efumaneka kwi-nucleus yisulfure. I-90% yazo zonke isalfure eMhlabeni isembindini. Isiseko siyaziwa njengeyona ndawo ishushu emhlabeni wonke. Izakhiwo zangaphakathi ziyanda kumaqondo obushushu njengoko sikhula kubunzulu. Nangona kunjalo, unikwe ngaphezulu kweekhilomitha ezingama-6.000 ezizahlulahlula kumphezulu womhlaba ukuya embindini woMhlabaKunzima ukuyazi kwiqondo lobushushu apho isinyithi esinyibilikisiweyo kunye neziko le-nickel. Amaqondo obushushu awafani ngokufanayo. Ziyatshintsha ngokuxhomekeka kuxinzelelo, ukujikeleza komhlaba kunye nokwenziwa kwezinto ezenza i-nucleus.

Kuba imisinga yokuhambisa izinto ibangela ukuba izinto zihambe, kukho izinto ezingena "ezintsha" kumbindi ngelixa abanye bemka kwakhona kwaye abasanyibiliki. Oku kungenxa yokusondela okanye umgama wezinto ezisuka kwiziko kunye nendawo yazo yokunyibilika.

Izifundo ngokubanzi zithi ubushushu bomhlaba Ihamba ukusuka kwi-4000 degrees Celsius ukuya kwi-6000 degrees, malunga.

Iimpawu eziphambili

Inokuba injani imeko yangaphakathi

Phakathi kweempawu zayo sibona ukuba izinto ezinegalelo kubushushu kumbindi kukubola kwezinto ezinemitha yeathom. Izinto ezinokusasazeka ngemitha zinika amandla amakhulu xa zisophuka. La mandla aguqulwa abe bubushushu xa ekhutshwa. Ubushushu obushiyekileyo ekwakhiweni kweplanethi busekhona, bushushu ubushushu. Elinye igalelo kubushushu bubushushu obukhutshelwa kumbindi wolwelo olungaphandle kwaye buqina kumda xa udibana nengaphakathi langaphakathi. Khumbula ukuba umbindi wangaphandle weplanethi yethu ulwelo kwaye undoqo wangaphakathi uqinile.

Ngalo lonke ixesha sihla nge-1 km ubunzulu bomhlaba, amaqondo obushushu anyuka malunga nama-25 degrees ngaphezulu. Oku kuthetha ukuba i-gradient gradient imalunga nama-25 degrees. Umda owahlula i-nucleus yangaphakathi kwangaphandle waziwa ngokuba yi-Bullen discontinuity. Ingxenye engaphandle yesiseko imalunga ne-3.000 km phantsi kweenyawo zethu. Kodwa eyona nto imbi kakhulu, indawo esembindini womhlaba imalunga ne-6.000 km ubunzulu.

Ukukunika umbono wendlela encinci esihlaba ngayo iplanethi yethu, oko umngxuma onzulu owenziweyo wehle kuphela nge-12,3 km. Ingathi ivela kwi-apile, besingene kuphela kulusu olucekeceke (kwaye ingeyiyo loo nto).

Maleko Core

Umaleko womhlaba

Masiqwalasele ngokusondeleyo kumaleko asisiseko.

I-nucleus yangaphandle

Imalunga ne-2.200 km ubukhulu kwaye yenziwe ngentsimbi kunye nenickel kwimeko engamanzi. Ubushushu bayo bujikeleze i-5000 degrees Celsius. Isinyithi eselulwelo kolu luhlu sinesinqe esisezantsi kakhulu, ngenxa yoko sinokukhubazeka ngokulula kwaye sithambe. Kule meko, kukho imijikelezo enobundlobongela yokuhambisa into ebangela umhlaba womazibuthe ukuba ubume.

Elona candelo lishushu lesiseko sangaphandle lifunyenwe kwi-Bullen discontinuity.

Isiseko sangaphakathi

Yibhola eshushu kakhulu kwaye eshinyeneyo edityaniswe ikakhulu yintsimbi. Iqondo lobushushu lifikelela malunga nama-5200 degrees celcius. Apha uxinzelelo luphantse lube zizigidi ezi-3,6.

Iqondo lobushushu kumbindi wangaphakathi lingaphezulu kwinqanaba lokunyibilika kwesinyithi. Nangona kunjalo, ikwisimo esomeleleyo. Kungenxa yokuba, ngokungafaniyo nomxholo ongaphandle, uxinzelelo lweatmosferi luphezulu kakhulu kwaye luyaluthintela ukunyibilika.

Ngolu lwazi baya kuba nakho ukwazi okungakumbi malunga nomhlaba kunye neempawu zawo.


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  1. Uxanduva lwedatha: UMiguel Ángel Gatón
  2. Injongo yedatha: Ulawulo lwe-SPAM, ulawulo lwezimvo.
  3. Umthetho: Imvume yakho
  4. Unxibelelwano lwedatha: Idatha ayizukuhanjiswa kubantu besithathu ngaphandle koxanduva lomthetho.
  5. Ukugcinwa kweenkcukacha
  6. Amalungelo: Ngalo naliphi na ixesha unganciphisa, uphinde uphinde ucime ulwazi lwakho.