Class 8 Social Science Part 2 Chapter 1: World Geography: Some Glimpses (Hinglish Notes)
Ye chapter 5 lines mein
World Geography: Some Glimpses Prithvi ka ek chhota sa tour hai. Chapter batata hai ki har flat map gol Prithvi ko thoda bigaad kyon deta hai, mahaasaagaron ki currents, trenches aur coral reefs samjhata hai, aur har mahaadweep ke landforms dikhata hai, Tibetan Plateau aur Sahara se Amazon aur Rocky Mountains tak. Saath hi batata hai ki ye cheezein climate aur jeevan ko kaise banaati hain, aur insaani kaam inhe kaise nuksaan pahuncha rahe hain.
Ye chapter kis baare mein hai?
Bharat mein Prithvi ko lambe samay se maa maana gaya hai, Bhudevi ya Vasudha, aur hamari zindagi door ki cheezon par bhi tiki hai: door dakshini Hind Mahaasaagar ki hawaayein Gangetic Plains tak monsoon laane mein madad karti hain. Ye chapter Prithvi ka ek chhota sa tour karata hai. Iske teen Big Questions hain: har mahaadweep ki bhautik visheshtaayein khaas kyon hain, world geography kyon samajhni chahiye, aur insaani kaam paryavaran ki samasyaayein kaise paida karte hain.
Gol Prithvi ka map
Prithvi ek oblate spheroid hai, lagbhag gend jaisi par dhruvon par thodi chapti. Santre ka chhilka flat dabaane ki koshish karo to wo phat jaata hai, aur isi tarah koi bhi flat map Prithvi ko bina bigaade nahi dikha sakta. Har map projection alag samjhauta karta hai. Mercator projection aakaar aur disha sahi rakhta hai, isliye jahaz chalaane mein kaam aata hai, par dhruvon ke paas ki zameen itni phula deta hai ki Greenland Africa jitna bada dikhta hai. Robinson projection size aur aakaar mein santulan rakhta hai aur zyada asli lagta hai. Sahi jagah ke liye professionals latitude aur longitude use karte hain. Padho Prithvi ka map banaana.
Neela grah
Mahaasaagar Prithvi ki satah ka lagbhag 71% dhakte hain aur uska lagbhag 97% paani rakhte hain. Inmein plankton se lekar blue whale tak jeevan hai; plankton hamari lagbhag aadhi oxygen dete hain. Mahaasaagar garmi jama karke aur hawa mein nami jodkar climate ko sambhaalte hain. Currents samudra mein nadiyon ki tarah paani le jaati hain: garam Gulf Stream United Kingdom ko apne latitude ki doosri jagahon se naram rakhti hai. Samudra tal par pahaad, maidaan aur gehri trenches hain; Mariana Trench ka Challenger Deep 11,000 m se zyada gehra hai. Great Barrier Reef jaise coral reefs samudra ki chauthaai prajaatiyon ko ghar dete hain. Chhote seas, gulfs, bays, straits aur canals vyapaar le jaate hain, aur 1869 mein khuli Suez Canal Bharat se Europe ka sabse chhota samudri raasta hai. Padho mahaadweep aur mahaasaagar.
Asia aur Europe
Tour ghar ke paas se shuru hota hai. Himalaya ke uttar mein Tibetan Plateau hai, sabse ooncha aur sabse bada plateau, jo tectonic plates ki usi takkar se utha jisne Himalaya banaaya. Ise Third Pole kehte hain; dhruvon ke baahar sabse zyada meetha paani yahin jama hai, aur ye Indus, Brahmaputra aur Yangtze ko paani deta hai. Uttar-poorab mein thanda Gobi Desert hai, phir vishaal Eurasian Steppes, ek ghaas ka maidaan jo carbon ko mitti mein band karta hai. Puraane Ural Mountains Europe ko Asia se alag karte hain. Unke pashchim mein upjaau European Plain faila hai, aur uske dakshin mein Alps ka ardh-chandra, jo Rhine aur Danube ko paani deta hai.
Africa aur America
Sahara sabse bada garam registaan hai, jise sadiyon se ghumantu log aur sone-namak ke vyapaari paar karte rahe. Uske dakshin mein savannah, chhitpute pedon wala ghaas ka maidaan, haathi, sher, zebra aur jiraaf ko paalta hai, aur lagbhag 6,650 km lambi Nile ne praacheen Egypt ko janm diya. South America mein Andes se Amazon ko paani milta hai, jo paani ki maatra mein sabse badi nadi hai aur jiske rainforest ko ‘Lungs of the Earth’ kehte hain, jabki Atacama Prithvi ki sabse sookhi jagahon mein hai. North America mein Grand Canyon wala Colorado Plateau, Yellowstone wale Rocky Mountains, bahut puraane Appalachians aur paanch Great Lakes hain.
Australia aur Antarctica
Australia ka bada hissa sookhi zameen hai, Great Australian Desert, jismein Great Victoria Desert bhi aata hai. Wahan wallabies, bilbies, dingoes aur jangli oont rehte hain, aur Spinifex log 25,000 saal se zyada samay se wahan reh rahe hain. Sabse bada registaan garam nahi hai: Antarctica, 14 million km² se bada, yaani Bharat se chaar guna se bhi zyada, Prithvi ka sabse thanda registaan hai.
Insaan aur Prithvi
Tour ke har padaav par insaani kaamon ke nishaan hain. Samudra ka badalta paani corals ko safed kar deta hai, Amazon mein jangal kat rahe hain, pighalta permafrost greenhouse gases chhodta hai, aur Atacama mein sasti kapdon ke dher lag rahe hain. Dekhbhaal se sudhaar bhi hota hai: 1995 mein Yellowstone mein waapas laaye gaye bhediyon ne wahan ka santulan lauta diya. Padho insaani kaam aur paryavaran ki samasyaayein.
Peechhe aur aage ki taraf
Chapter agle chapter se jodne wale hisse par khatm hota hai, jo Odisha ki do shuruaati bagaawaton ko yaad karta hai. 1817 ke Paika Sangram mein Paika, yaani kisan sainik jinki zameen British ki bhaari maangon mein chali gayi thi, tribal groups ke saath Buxi Jagabandhu ki agvaai mein uthe aur Puri par kabza kiya. Sambalpur mein Surendra Sai ne 1827 se 1862 tak muqabla kiya.
Aage badhne se pehle
Prithvi ke pahaad aur plateau, uske maidaan, registaan aur ghaas ke maidaan, aur uski nadiyaan aur mahaasaagar climate, jaanvar, kheti, basaav aur vyapaar ko aakaar dete hain. Jangal kaatna, sansaadhanon ka zyada istemaal aur pradooshan jaise insaani kaam ye santulan bigaadte hain, isliye world geography samajhna Prithvi ka samajhdaari se istemaal karne mein madad karta hai. Har sawaal ke jawab Part 2 Chapter 1 ke NCERT solutions mein hain.
Key terms (zaroori shabd)
| Term | Matlab |
|---|---|
| Oblate spheroid | Prithvi ka asli aakaar: lagbhag gend jaisa, Equator par thoda phoola hua aur dhruvon par thoda chapta, kyunki Prithvi ghoomti hai. |
| Map projection | Prithvi ki gol satah ko flat map par dikhaane ka tareeka; har projection aakaar, size, doori ya disha mein kuch na kuch bigaadta hai. |
| Cartographer | Map banaane wala vyakti. |
| Plankton | Paani mein tairte nanhe jeev; jinmein chlorophyll hota hai, ve dhoop aur carbon dioxide se khaana banaate hain aur oxygen chhodte hain. |
| Ocean current | Samudra ke paani ka lagaataar behaav, jaise samudra ke andar nadi; garam currents dhruvon ki taraf aur thandi Equator ki taraf jaati hain. |
| Trench | Samudra tal ka bahut gehra, V-aakaar hissa; Mariana Trench sabse gehri hai. |
| Reef | Samudra ki satah par ya uske paas ek ubhri patti, jo chattan ki hoti hai ya corals naam ke nanhe jeev banaate hain. |
| Strait | Do samudron ya mahaasaagaron ko jodne wali sankari jal-patti, jaise Strait of Malacca. |
| Tectonic plates | Prithvi ki parat ke bade tukde jinki halchal se pahaad aur plateau bante hain; Himalaya do plates ke takraane se utha. |
| Steppe | Bada, samtal, bina pedon ka ghaas ka maidaan, jahan garmi garam, sardi thandi aur baarish madhyam hoti hai. |
| Water towers | Pahaadon ka ek naam, kyunki unki barf aur glaciers dheere-dheere pighal kar nadiyon ko meetha paani dete hain. |
| Tundra aur permafrost | Bina pedon ka thanda maidaan, jiski mitti, yaani permafrost, zyaadatar jami rehti hai aur greenhouse gases ko band rakhti hai. |
| Savannah | Chhitpute pedon wala garam ilaake ka ghaas ka maidaan, jismein ek geela aur ek sookha mausam hota hai; ye rainforests aur registaanon ke beech hota hai. |
| Conservation hotspot | Aisa ilaaka jahan gaayab hote desi paudhon aur jaanvaron ko bachaane ka kaam hota hai, jo aksar insaani gatividhi se ghat rahe hote hain. |
Is chapter ke topics
Practice karo
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Physical map par gehra bhoora rang aam taur par kya dikhata hai?
Jawab dekho
Jawab: (c) oonche pahaad
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Kaun sa projection Greenland ko Africa jitna bada dikhata hai?
Jawab dekho
Jawab: (b) Mercator
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Mahaasaagar Prithvi ki satah ka lagbhag kitna hissa dhakte hain?
Jawab dekho
Jawab: (c) 71%
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Europe aur Asia ke beech kudrati seema banaane wali parvat-maala kaun si hai?
Jawab dekho
Jawab: (b) Urals
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Prithvi ka sabse bada registaan kaun sa hai?
Jawab dekho
Jawab: (d) Antarctica
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Suez Canal Red Sea ko kisse jodti hai?
Jawab dekho
Jawab: (b) Mediterranean Sea
Students ke sawal
Class 8 Social Science Part 2 Chapter 1 mein kya-kya hai?
Physical maps aur har map projection Prithvi ko kyon bigaadta hai; mahaasaagar, unki currents, trenches aur coral reefs; seas, gulfs, bays, straits aur canals; har mahaadweep ke landforms ka tour, Tibetan Plateau aur Urals se Sahara, Andes, Rockies aur Great Australian Desert tak; aur insaani kaam paryavaran ki samasyaayein kaise paida karte hain.
Kya World Geography: Some Glimpses nayi NCERT Class 8 book mein hai?
Haan. Ye Exploring Society: India and Beyond, Class 8 Social Science textbook Part 2 (pehla edition June 2026) ka Chapter 1 hai. Ye book ki Bharat aur duniya, uski zameen aur logon wali theme ka hissa hai. Part 1 ke 7 chapters ke baad Part 2 ki ginti phir se 1 se shuru hoti hai.
Is chapter ke teen Big Questions kya hain?
Ye poochhte hain ki har mahaadweep ki bhautik visheshtaayein khaas kyon hain, world geography samajhna kyon zaroori hai, aur insaani kaam paryavaran ki samasyaayein kaise paida karte hain. Chapter mahaasaagaron aur landforms ke tour se inke jawab deta hai, aur dikhata hai ki har cheez climate, jaanvaron aur logon par kaise asar daalti hai.
Prithvi ko blue planet kyon kehte hain?
Kyunki uski satah ka lagbhag 71% mahaasaagaron se dhaka hai, jinmein uska lagbhag 97% paani hai. Antariksh se Prithvi zyaadatar neeli dikhti hai, isliye shuruaati astronauts ne use ye naam diya.
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