Geography Class 11, Chapter 4, Distribution of Oceans and Continents (Hindi Edition) PDF

Summary

This chapter details the distribution of oceans and continents, including evidences for continental drift, and the theory of plate tectonics. It explains forces behind continental drift, the age and composition of ocean floor rocks. This content is part of a class 11 geography textbook.

Full Transcript

vè;k; egklkxjksa vkSj egk}hiksa dk forj.k fi Nys vè;k; esa vkius HkwxHkZ osQ fo"k; esa ius esa ennxkj gksaxsA egklkxj rd tkrh gSA Hkkjrh; miegk}hi osQ FkksMk+ egklkxjh;...

vè;k; egklkxjksa vkSj egk}hiksa dk forj.k fi Nys vè;k; esa vkius HkwxHkZ osQ fo"k; esa ius esa ennxkj gksaxsA egklkxj rd tkrh gSA Hkkjrh; miegk}hi osQ FkksMk+ egklkxjh; ry dh vko`Qfr;k¡ vè;k; 13 esa foLrkj ls nf{k.k esa ;g nks Hkkxksa esa c¡V tkrh gS] ftldh ,d 'kk[kk Rationalised 2023-24 32 HkkSfrd Hkwxksy osQ ewy fl¼kar fp=k 4-2 % HkwoaQi o Tokykeqf[k;ksa dk forj.k iwohZ vizQhdk dh vksj pyh tkrh gS vkSj nwljh e;uekj egk}hih; foLFkkiu fl¼kar osQ le; miyC/ ugha FkhA ls gksrh gqbZ U;w fxuh ij ,d ,slh gh js[kk ls fey tkrh pêðkuksa osQ iqjk pqacdh; vè;;u vkSj egklkxjh; ry gSA vki ;g ik,¡xs fd ;g fcanqjs[kk eè;&egklkxjh; osQ ekufp=k.k us fo'ks"k :i ls fuEu rF;ksa dks mtkxj dVdksa osQ le:i gSA HkwoaQih; laosQUnz.k dk nwljk {ks=k fd;k% Nk;kafdr es[kyk (Shaded belt) osQ ekè;e ls (i) ;g ns[kk x;k fd eè; egklkxjh; dVdksa osQ fn[kk;k x;k gS] tks vYikbu&fgeky; (Alpine- lkFk&lkFk Tokykeq[kh mn~xkj lkekU; fozQ;k gS Himalayan) Jsf.k;ksa osQ vkSj iz'kkar egklkxjh; vkSj ;s mn~xkj bl {ks=k esa cM+h ek=kk esa ykok fdukjksa osQ le:i gSA lkekU;r% eè; egklkxjh; ckgj fudkyrs gSaA dVdksa osQ {ks=k esa HkwoQa i osQ mn~xe osQa nz de xgjkbZ ij (ii) egklkxjh; dVd osQ eè; Hkkx osQ nksuksa rjiQ gSa tcfd vYikbu&fgeky; iêðh o iz'kkar egklkxjh; leku nwjh ij ikbZ tkus okyh pêðkuksa osQ fuekZ.k fdukjksa ij ;s osQa nz vf/d xgjkbZ ij gSAa Tokykeq[kh dk le;] lajpuk] la?kVu vkSj pqacdh; xq.kksa ekufp=k Hkh blh dk vuqdj.k djrs gSAa iz'kkar egklkxj esa lekurk ikbZ tkrh gSA egklkxjh; dVdksa osQ osQ fdukjksa dks lfozQ; Tokykeq[kh osQ {ks=k gksus osQ dkj.k lehi dh pêðkuksa esa lkekU; pqacdRo /qzo.k ^fjax vkWiQ iQk;j* (Ring of fire) Hkh dgk tkrk gSA (Normal polarity) ikbZ tkrh gS rFkk ;s pêðkusa uohure gSaA dVdksa osQ 'kh"kZ ls nwj lkxjh; v/Lry dk foLrkj pêðkuksa dh vk;q Hkh vf/d gSA tSlk fd mQij o.kZu fd;k x;k gS] izokg mijkar (iii) egklkxjh; iiZVh dh pêðkusa egk}hih; iiZVh vè;;uksa us egRoiw.kZ tkudkjh izLrqr dh] tks osxuj osQ dh pêðkuksa dh vis{kk vf/d ubZ gSAa egklkxjh; Rationalised 2023-24 egklkxjksa vkSj egk}hiksa dk forj.k 33 fp=k 4-3 % lkxjh; v/Lry foLrkj iiZVh dh pêðkusa dgha Hkh 20 djksM+ o"kZ ls bu rF;ksa vkSj eè; egklkxjh; dVdksa osQ nksuksa vf/d iqjkuh ugha gSaA rjiQ dh pêðkuksa osQ pqacdh; xq.kksa osQ fo'ys"k.k osQ (iv) xgjh [kkb;ksa esa HkwoaQi osQ mn~xe vf/d vk/kj ij gsl (Hess) us lu~ 1961 esa ,d ifjdYiuk xgjkbZ ij gSaA tcfd eè;&egklkxjh; dVdksa izLrqr dh] ftls ^lkxjh; v/Lry foLrkj* (Sea floor osQ {ks=k esa HkwoaQi mn~xe osaQnz (Foci) de spreading) osQ uke ls tkuk tkrk gSA gsl (Hess) xgjkbZ ij fo|eku gSaA osQ rdkZuqlkj egklkxjh; dVdksa osQ 'kh"kZ ij yxkrkj fp=k 4-4 % fiNys 5]400 yk[k o"kks± esa egk}hiksa dh xfrA (1) vizQhdk_ (2) nf{k.k vesfjdk_ (3) vaVkoZQfVdk_ (4) vkWLVsfsª y;k_ (5) Hkkjr_ (6) phu_ (7) mÙkjh vesfjdk_ (8) ;wjksi_ (9) ,oa (10) lkbcsfj;k (,feykuh] 1992) fp=k 4-4 % HkwoSKkfud dkyksa esa egk}hiksa dh fLFkfr Rationalised 2023-24 34 HkkSfrd Hkwxksy osQ ewy fl¼kar Tokykeq[kh mn~Hksnu ls egklkxjh; iiZVh esa foHksnu izLrqr dh] ftls ^IysV foorZfudh* (Plate tectonics) gqvk vkSj u;k ykok bl njkj dks Hkjdj egklkxjh; dgk x;kA ,d foorZfud IysV (ftls fyFkksLisQfjd iiZVh dks nksuksa rjiQ /osQy jgk gSA bl izdkj egklkxjh; IysV Hkh dgk tkrk gS)] Bksl pêðku dk fo'kky o v/Lry dk foLrkj gks jgk gSA egklkxjh; iiZVh dk vfu;fer vkdkj dk [kaM gS] tks egk}hih; o egklkxjh; vis{kko`Qr uohure gksuk vkSj blosQ lkFk gh ,d LFkyeaMyksa ls feydj cuk gSA ;s IysVsa nqcZyrkeaMy egklkxj esa foLrkj ls nwljs egklkxj osQ u floqQM+us (Asthenosphere) ij ,d n`

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