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Class -3 Science, Chapter 10 Water, Solved Exercises & Ques/Ans, A. Fill in the blanks., 1. Rain and snow are the main sources of water nature., 2. Rivers flow into a sea or an ocean, 3. India is surrounded by bay of bengal on the east side., 4. A dam store river water which is used to generate electricity., 5. Water is canals is used for irrigating the field., B. Write true or false for the following, statements., 1. Snow is a natural sources of water. T, 2. People draw water from a river using a hand pump. F, 3. River water is purified for drinking purpose.T, 4. India is surrounding by Arabian sea on the West side. T, 5. Ground water in used by plant for their growth. T, C. Tick the, correct option., , ✅, , 1. Water, present under the surface of earth, is calleda) Tap water b) ground water c) lake d) rain water, 2. One of the main river South India isa) Ganga b) Chenab c) Cauvery d) Beas, 3. One the Southern side, India is surrounding by a) Bay of Bengal b) Arabian sea c) Pacific Ocean d) Indian Ocean, 4. It dance in the rain., a) Peacock b) cat c) dog d) squirrel, 5. River gets water mainly from a) lake and pounds b) candles and ocean c), rain and snow d), underground and Wells, D. Answer the following question in brief., Question.1 name two main natural sources of water., Answer. Rain and slow are the two main natural sources of water., Question.2 name any three inland water bodies., Answer. Lakes and rivers are the three inland water bodies., Question.3 write one use of water in the canals., Answer. The water in the canals is used for irrigating the fields., Question.4 name two main rivers of North India., Answer. Ganga and Yamuna are the two main rivers of North India., Question.5 state two methods of drawing ground water., Answer. Two methods of drawing ground water are, 1) From Wells, 2) By using hand pump

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E. Answer the following questions., Question.1 How is snow and sources of water?, Answer. In winters, there is a normally heavy snow fall on the mountains, during summer, a, part of this snow melts are changed into water. This water flows down the mountain into the, rivers and lakes ,hence snow is a source of water., Question.2 How is a dam useful for generating electricity?, Answer. A dam stores river water in it. This stored water is made to fall from a height on the, blades of turbine . By the pressure of water the blades rotate at a high speed. This process, produce electricity., Question.3 why do plants look greener after rain?, Answer. Plants look greener after rain because rain water washes away the dust and dirt from, the leaves of the plants., Question.4 How is groundwater useful?, Answer. Ground water is useful in may ways., 1) People draw it for various use from Wells or by using hand pumps., 2) It is used by plants for their growth., Question.5 Why are picnic spots often development around are near lakes?, Answer. Picnic spots are often developed around or near lakes because the water present, there is used for boating and other water sports.