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GEOGRAFIJA (POSTANAK I
UNUTRAŠNJA GRAĐA ZEMLJE
LITOSFERNE PLOČE
Autor:Teodora Bojic
SADRŽAJ
UNUTRAŠNJA GRAĐA ZEMLJE
UNUTRAŠNJA GRAĐA I RELJEF ZEMLJE
UNUTRAŠNJA SILA ZEMLJE
LITOSFERNE PLOČE
KRETANJA LITOSFERNIH PLOČI
ALFRED VEGENER
UNUTRASNJA GRADJA
ZEMLJE.
Zemlja je slojevite građe. U njenom
sastavun izdvajaju se tri glavna sloja.
1.Zemljina kora,
2.Omotač jezera ,
3. Jezgro.
UNUTRAŠNJA GRAĐA
ZEMLJE
Prilikom hlađenja Zemlje najbrže se hladila
njena površina koja se pretvarala u čvrstu
koru .Zemljina kora je gornji i najtanji sloj u
građi Zemlje. To je čvrst omotač, čija
debljina nije svuda jednaka.Kora je najdeblja
na mestima kontinenata
(20-70 km), gde je nazivamo
kontinentalnom korom, a najtanja na dnu
okeana (5-10 km), gde je nazivamo
okeanskom krom .
Evo još jedan prikaz tipova zemljine
kore
UNUTRAŠNJA GRAĐA
 Ispod zemljine kore nalazi se omotač jezgra. Njegova debljina iznosi oko 2900 km.
Omotač jezgra zauzima najveći deo Zemljine unutrašnjosti. Idući od Zemljine kore prema
središtu Zemlje, temperatura i pritisak rastu, pa su stene u omotaču toliko ugrejane da
mogu da se deformišu. Deo omotača jezgra koji je bliži Zemljinoj kori izgrađen je od
žitke mase koju nazivamo magma. Zbog veoma visokih temperatura, magma se sastoji
od rastopljenih stena.Ona se neprestano kružno kreće u Zemljinoj unutrašnjosti . To
dovodi do pomeranja u Zemljinoj kori. Njdublji sloj Zemlje je jezgro. Nalazi se u središtu
Zemlje i sastoji se od unutrašnjeg i spoljašnjeg jezgra. Iako su temprature visoke,
unutrasnje jezgro je u čvrstom stanju zbog visokog pritiska. Pretežno je izrađeno od
gvožđa i nikla. Spoljašnje jezgro je žitko
UNUTRAŠNJE SILE ZEMLJE
 Unutrašnje sile Zemlje su toplota zemljine unutrašnjosti i sila Zemljine
teže. Naučili smo da u unutrašnjosti Zemlje vladaju veoma visoke
temperature. Iz omotacča jezgra prema Zemljinoj kori struji unutrašnja
toplota koja pokreće magmu prema površini. Sila Zemljine teže, suprotno
unutrašnjoj toploti, privlači sve prema središtu zemlje. Zbog njihovog
delovanja u suprotnim pravcima i zbog jakih pritisaka, Zemljina kora se
savija i lomi. Pokreti nastali radom unutrašnjih Zemljinih sila nazivaju se
tektonski pokreti.
LITOSFERNE PLOČE
 Naučili smo da je litosfera stenoviti omotac zemlje. Zemljina kora nije
jedinstvena, vec je razlomljena na litosferne ploče koje imaju različite
veličine i oblike. Litosferne ploče se kreću. Njih pokreću snažna struja
toplote. Tokom kretanja ploče se razdvajaju i međusobno udaljavaju,
Negde se približavaju, sudaraju ili podvlače jedna pod drugu. Razmicanje,
sudaranje i podvlačenje, kao i mimoilaženje litosfernih ploča izaziva velike
promene na Zemljinoj povrsini, kako na kopnu, tako i pod morem.
LITOSFERNE PLOČE
KRETANJE LITOSFERNIH
PLOČA
Zemljine litosferne ploče su ogromni blokovi.Njihovu podlogu
čine visoko nabrane granitne metamorfizovane magmatske
stene.Odozgo su prekriveni"poklopcem"od tri-četiri kilometra.
Nastaje od sedimentnih stena. Platforma ima reljef koji se
sastoji od pojedinačnih planinskikretanja litosferskih ploča.
ALFRED VEGENER
Početkom XX veka nemački
naučnik Alfred Vegener je utvrdio da
su u davnoj prošlosti svi kontinenti
bili spojeni pre..
KRAJ PREZENTACIJE

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Geografija (postanak I unutrasnja gradja zemlje litosferne.pptx

  • 1. GEOGRAFIJA (POSTANAK I UNUTRAŠNJA GRAĐA ZEMLJE LITOSFERNE PLOČE Autor:Teodora Bojic
  • 2. SADRŽAJ UNUTRAŠNJA GRAĐA ZEMLJE UNUTRAŠNJA GRAĐA I RELJEF ZEMLJE UNUTRAŠNJA SILA ZEMLJE LITOSFERNE PLOČE KRETANJA LITOSFERNIH PLOČI ALFRED VEGENER
  • 3. UNUTRASNJA GRADJA ZEMLJE. Zemlja je slojevite građe. U njenom sastavun izdvajaju se tri glavna sloja. 1.Zemljina kora, 2.Omotač jezera , 3. Jezgro.
  • 4. UNUTRAŠNJA GRAĐA ZEMLJE Prilikom hlađenja Zemlje najbrže se hladila njena površina koja se pretvarala u čvrstu koru .Zemljina kora je gornji i najtanji sloj u građi Zemlje. To je čvrst omotač, čija debljina nije svuda jednaka.Kora je najdeblja na mestima kontinenata (20-70 km), gde je nazivamo kontinentalnom korom, a najtanja na dnu okeana (5-10 km), gde je nazivamo okeanskom krom .
  • 5. Evo još jedan prikaz tipova zemljine kore
  • 6. UNUTRAŠNJA GRAĐA  Ispod zemljine kore nalazi se omotač jezgra. Njegova debljina iznosi oko 2900 km. Omotač jezgra zauzima najveći deo Zemljine unutrašnjosti. Idući od Zemljine kore prema središtu Zemlje, temperatura i pritisak rastu, pa su stene u omotaču toliko ugrejane da mogu da se deformišu. Deo omotača jezgra koji je bliži Zemljinoj kori izgrađen je od žitke mase koju nazivamo magma. Zbog veoma visokih temperatura, magma se sastoji od rastopljenih stena.Ona se neprestano kružno kreće u Zemljinoj unutrašnjosti . To dovodi do pomeranja u Zemljinoj kori. Njdublji sloj Zemlje je jezgro. Nalazi se u središtu Zemlje i sastoji se od unutrašnjeg i spoljašnjeg jezgra. Iako su temprature visoke, unutrasnje jezgro je u čvrstom stanju zbog visokog pritiska. Pretežno je izrađeno od gvožđa i nikla. Spoljašnje jezgro je žitko
  • 7. UNUTRAŠNJE SILE ZEMLJE  Unutrašnje sile Zemlje su toplota zemljine unutrašnjosti i sila Zemljine teže. Naučili smo da u unutrašnjosti Zemlje vladaju veoma visoke temperature. Iz omotacča jezgra prema Zemljinoj kori struji unutrašnja toplota koja pokreće magmu prema površini. Sila Zemljine teže, suprotno unutrašnjoj toploti, privlači sve prema središtu zemlje. Zbog njihovog delovanja u suprotnim pravcima i zbog jakih pritisaka, Zemljina kora se savija i lomi. Pokreti nastali radom unutrašnjih Zemljinih sila nazivaju se tektonski pokreti.
  • 8. LITOSFERNE PLOČE  Naučili smo da je litosfera stenoviti omotac zemlje. Zemljina kora nije jedinstvena, vec je razlomljena na litosferne ploče koje imaju različite veličine i oblike. Litosferne ploče se kreću. Njih pokreću snažna struja toplote. Tokom kretanja ploče se razdvajaju i međusobno udaljavaju, Negde se približavaju, sudaraju ili podvlače jedna pod drugu. Razmicanje, sudaranje i podvlačenje, kao i mimoilaženje litosfernih ploča izaziva velike promene na Zemljinoj povrsini, kako na kopnu, tako i pod morem.
  • 10. KRETANJE LITOSFERNIH PLOČA Zemljine litosferne ploče su ogromni blokovi.Njihovu podlogu čine visoko nabrane granitne metamorfizovane magmatske stene.Odozgo su prekriveni"poklopcem"od tri-četiri kilometra. Nastaje od sedimentnih stena. Platforma ima reljef koji se sastoji od pojedinačnih planinskikretanja litosferskih ploča.
  • 11. ALFRED VEGENER Početkom XX veka nemački naučnik Alfred Vegener je utvrdio da su u davnoj prošlosti svi kontinenti bili spojeni pre..