Physiography and Drainage
Maharashtra Board · Class 10 · Geography
Complete topic list for Physiography and Drainage in Maharashtra Board Class 10 Geography. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in Physiography and Drainage
Major Physiographic Divisions of India
- India has five major physiographic divisions: The Himalayas, North Indian Plains, The Peninsula, Coastal Plains, and Island Groups
- The Himalayas are young fold mountains extending from Jammu & Kashmir to Arunachal Pradesh
- Himalayan ranges (south to north): Siwaliks (youngest), Lesser Himalayas, Greater Himalayas/Himadri, Trans-Himalayan ranges
Physiographic Divisions of Brazil
- Brazil has five major physiographic divisions: The Highlands, Coastal Region, Island Groups, Great Escarpment, The Plains
- Brazilian Highlands/Brazilian Shield/Brazilian Plateau covers southern Brazil - forms core of South American continent
- Guyana Highlands in north (states: Roraima, Para, Amapa) - Pico de Neblina (3014m) is Brazil's highest peak
Drainage Systems of India
- Indian rivers classified by source: Himalayan Rivers (glacial origin, perennial) and Peninsular Rivers (rain-fed, seasonal)
- Himalayan Drainage: Two major systems - Indus system (western Himalayas) and Ganga system (central/eastern Himalayas)
- Indus system: Indus and tributaries (Jhelum, Chenab, Ravi, Satluj) flow through J&K, Ladakh, Punjab; meet Arabian Sea
Drainage Systems of Brazil
- Brazil has three major river basins: Amazon Basin, Paraguay-Parana system, Sao Francisco, plus coastal rivers
- Amazon Basin: Originates from eastern Andes slopes in Peru, huge discharge (2 lakh cu.m/sec), navigable throughout
- Amazon mouth characteristics: 150 km wide, no major delta formation due to high discharge washing away sediments
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