Topics
CISCE: Class 10
Key Points: Significance of the Great Northern Wall
- Climatic barrier – Himalayas block cold winds in winter and force monsoon winds to shed rain over North India and Brahmaputra valley.
- Source of rivers – Himalayan glaciers give rise to perennial rivers like Ganga, Yamuna and Brahmaputra, ensuring water and irrigation.
- Hydel power & fertility – Steep slopes create waterfalls for hydroelectric power and rivers deposit fertile alluvium in plains.
- Natural defence & tourism – Act as a protective wall against invasions; contain major hill stations, shrines and adventure sites.
- Rich resources – Himalayas have dense forests, wildlife and minerals; Western Himalayas get less rain, Eastern Himalayas receive heavy rainfall.
