A) Answer these questions briefly: 1) What is a dam? Ans- Dams are strong walls built across the rivers. - It is a man-made lake. 2) What is a canal? Ans- Canal is a channel of water drawn from a river or dam. - It is man-made river. 3) What are the different uses of water? Ans- The different uses of water are- * Drinking * Bathing * Washing * Cleaning * Cooking * Irrigation 4) Name the various means of irrigation. Ans- The various means of irrigation are- * Well * Tube well * Rain water * Canal * Dam 5) Who called dams the ‘temples of modern India’? Ans- Pandit Jawaharlal Nehru called dams the ‘new temples of modern India’. 6) What is the most important use of water? Ans- Irrigation is the most important use of water. 7) What do you know about Bhakra Nagal Dam? Ans- * It is a multi-purpose river project. - It is the largest dam in India. - It is built on the Satluj River. - It is in the state of Himachal Pradesh. - It’s height 226 meter. 8) What do you mean by multi-purpose river projects? Ans- Water of the river is stopped by building walls across the river. - By doing this, dams are made on the rivers. - Water is supplied to the villages, towns, cities though different channels. - This water is used for various purposes like- daily needs, producing electricity, irrigation etc. Such projects are called as multi-purpose river projects. Ex- Bhakra Nagal Dam. 9) Name any three multi-purpose river projects in our country. Ans- The three multi-purpose river projects in our country are- a) Bhakra Nagal Dam b) Hirakud Dam c) Mettur Dam B) Match the following: 1) Kosi Dam - Kosi 2) Bhakra Dam - Satluj 3) Hirakud Dam - Mahanadi 4) Gandhi Sagar Dam - Chambal 5) Nagarjuna Sagar Dam - Krishna C) Fill in the blanks with suitable words: 1) Water is the basis of all life. 2) The Kaveri is a river of southern part of India. 3) The Ganga is a river of northern part of India. 4) We should not pollute our water resources. 5) Nehru called dams the ‘new temples of modern India’. .