Geographica

Topics covered - 1.An introduction to drainage 2.India’s Drainage Systems 3.Drainage Pattern of India 4.The Himalayan Rivers 5.The Indus River system 6.The Ganga River system 7.The Brahmaputra River system 8.The Peninsular Rivers 9.The Narmada Basin 10.The Tapi Basin 11.The Godavari Basin 12.The Mahanadi Basin 13.The Krishna Basin 14.The Kaveri Basin 15. Lakes 16.Role of Rivers in the Economy 17.Pollution of Rivers Drainage of a landmass refers to its river system. Small streams which flow from different directions usually come together to form the main river body.  This river drains into a larger water body like a lake, sea, or ocean. The area which is drained by a single river system is termed a drainage basin .  An elevated physical structure like a mountain or an upland sometimes separates two drainage basins. This physical feature is called the water divide.  Important Drainage Systems of India The drainage systems in India are dominated by b...

  Multiple choice type questions: Q1. India has got .............. no. of states and ............ no. of union territories? (a) 29 States 5 union territories (b) 28 States 8 union territories (c) 29 States 7 union territories (d) 28 States 5 union territories Q2. In India, from Gujarat to Arunachal Pradesh the time lag is? (a) 2 hrs 05 min. (b) 2 hrs. (c) 2 hrs 10 min. (d) 2 hrs 15 min. Q3. India is the ....................... largest country in the world? (a) Second (b) Fourth (c) Third (d) Seventh Q4. The east-west extent of India is: (a) 2833 kms (b) 3214 kms (c) 2933 kms (d) 3014 kms Q5. The land mass of India has an area of ................... million square kms. (a) 3.18 (b) 3.28 (c) 3.38 (d) 3.48 Q6. India lies in which of the hemisphere? (a) Northern & Eastern (b) Southern & Eastern (c) Northern & Western (d) Southern & Western Q7. What is IST? (a) Indian Stretchable Time (b) International Standard Time (c) Indian Stabilized Time (d) Indian Standard Time Q8....

Topics to be covered - 1. Water 2. Fresh water. 3. Water scarcity 4. Causes and types. 5. Dams 6. Advantages and disadvantage 7. Rainwater harvesting 8. Old and modern methods Water Three-fourth of the earth’s surface is covered with water but only a small proportion of it accounts for freshwater, that can be put to use. Water is a renewable resource. Fresh water: 96.5 per cent of the total volume of world’s water is estimated to exist as oceans and only 2.5 per cent exists as fresh water. 70 per cent of the fresh water occurs as ice sheets and glaciers in Antarctica, Greenland and the mountainous regions of the world. Less than 30 per cent is stored as groundwater in the world’s acquirers. Fresh water is mainly obtained from surface run off and ground water. This is continually being renewed and recharged through the hydrological cycle. All the water moves within the hydrological cycle making water a renewable resource. Three fresh water sources are: Precipitation—from rainfall; Surfa...