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NEW NCERT CLASS-8(PART-2)CH-1 WORLD GEOGRAPHY OF GLIMPSEES; 2ND VIDEO

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NEW NCERT CLASS-8(PART-2)CH-1 WORLD GEOGRAPHY OF GLIMPSEES; 2ND VIDEO

13 просмотров · 9 дн. назад
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13 просмотров · 9 дн. назад
Thank you for watching this video Please follow me Africa An ancient continental shield consisting primarily of plateau surfaces stepped down to narrow coastal fringes: Deserts & Drainage: The Sahara dominates northern Africa, while the Kalahari and Namib flank the southwest. Major drainage networks include the Nile (the world's longest river system), Congo (the second largest by discharge, draining equatorial rainforests), Niger, and Zambezi. Tectonic Fractures: The East African Rift contains deep graben lakes (Lake Tanganyika, Lake Malawi, Lake Victoria) and prominent volcanic massifs such as Mount Kilimanjaro (5,895 m) and Mount Kenya. Plateau Uplands: The Ethiopian Highlands and South African Great Escarpment (Drakensberg) dictate regional microclimates and river headwaters. North America Exhibits a distinct longitudinal layout: western cordilleras, central interior plains, and eroded eastern uplands: Western Cordillera: Stretching from Alaska to Mexico, encompassing the young, jagged Rocky Mountains, the volcanic Cascade Range, the Sierra Nevada, and high-altitude arid basins (the Great Basin, Colorado Plateau, Mojave Desert). Interior Plains: The Great Plains and Mississippi River Basin represent an expansive agricultural heartland drained by the Mississippi-Missouri system into the Gulf of Mexico. Ancient Canadian Shield & Appalachians: The glacier-scoured Laurentian Plateau surrounds Hudson Bay, rich in exposed minerals and freshwater lakes (Great Lakes: Superior, Michigan, Huron, Erie, Ontario). The eastern boundary is framed by the geologically ancient, rounded Appalachian Mountains. South America Characterized by an uninterrupted western cordillera, expansive low-gradient basins, and ancient eastern shields: Andean Backbone: The Andes extend over 7,000 km along the entire Pacific margin, featuring high altiplanos, volcanic peaks (Aconcagua, 6,961 m), and extreme high-altitude ecosystems. River Basins: The Amazon Basin contains the world's highest discharge river and the largest tropical rainforest biome. The Orinoco Basin (Llanos) and the Río de la Plata system (Paraná and Paraguay rivers, draining the fertile Pampas) complete the primary drainage layout. Shields: The Guiana Shield in the north and the Brazilian Shield across eastern South America form stable, weathered crystalline uplands containing dramatic table-top mountains (tepuis). Europe A peninsular extension of western Eurasia defined by broken coastlines, internal seas, and distinct latitudinal zones: Highland Belts: The young Alpine arc (Alps, Pyrenees, Apennines, Carpathians, Caucasus) dominates the south, housing Mont Blanc (4,808 m) and Mount Elbrus (5,642 m). The Northern European Plain: A vast, unbroken lowland stretching from southwestern France through northern Germany and Poland into the East European Plain, facilitating intensive agriculture, industrial belts, and dense transport corridors. Inland Waterways: Dense navigable drainage basins, including the Danube, Rhine, Volga (Europe's longest river), and Seine, historically interconnected continental commerce. Oceania & Australia The lowest, flattest, and driest inhabited continent, complemented by isolated volcanic and coral island networks: Australian Landforms: Comprises the ancient Western Plateau (outback shield), the central sedimentary lowlands (Great Artesian Basin, Lake Eyre depression), and the eastern Great Dividing Range. The northeastern coast hosts the Great Barrier Reef, the world's largest biogenic coral structure. New Zealand & Pacific Islands: New Zealand sits along the Pacific-Indo-Australian plate margin, split into the glaciated, mountainous South Island (Southern Alps) and the volcanically active North Island. Polynesia, Micronesia, and Melanesia form constellations of volcanic high islands and low-lying biogenic coral atolls across the central Pacific. Antarctica.