Science 'N' us-3 final - School Books Publishers India

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Multiple Choice Questions(Based on chapters 9, 10, 11 and 12)Choose the right option :1. Standard unit to measure length is :(a) kilometre(b) centimetre(c) metre✓(d) millimetre2. Thermometer is an instrument to measure :(a) time(b) temperature(c) weight(d) volume3. 'Lungs' are the parts of our respiratory system.(a) skeletal(b) digestive(c) nervous(d) respiratory4. Our body is made up of :(a) bricks(b) cells(c) tissues(d) sense organs5. These teeth are meant for tearing food :(a) incisors(b) molars(c) canines✓(d) premolars6. Molars are meant for grinding the food.(a) Molars✓(b) Premolar(c) Canines(d) Incisors7. Rice and sugar are examples of :(a) energy-giving foods ✓(b) protective foods(c) body-building foods (d) roughage8. Milk is considered as a complete food.(a) Potato(b) Milk(c) Water(d) Egg13.HOUSING AND CLOTHINGExerciseA. Answer the following questions :1. Why do we need a house?Ans. We all need a house because a house saves us from the sun, cold, rain,strong winds, animals, thieves, etc.2. Write the name of various rooms in a house.Ans. A good house should have following rooms :(i) drawing room (ii) dining room (iii) bedroom(iv) kitchen (v) storeroom (vi) study(vii) bathroom (viii) toilet3. Write three ways to keep our house clean.Ans. (i) Toilet, bathroom and wash basins should be cleaned daily.Horizon Press64Science 'n' Us - 1 to 5✓✓✓✓
Ans.(ii) Surroundings of the house should be kept clean and hygienic.(iii) Dustbins should be disposed off at appropriate places.4. Write four characteristics of a good house.(i) A house should be open and airy. All rooms should be properlyventilated.(ii) Proper drainage for the passage of dirty water should be there.(iii) The floor of the house should be smooth and leveled.(iv) The house should always be clean and beautiful.5. How should we clean our clothes?Ans. Clothes should be washed regularly and properly using good quality ofsoap and detergents.6. Why should we not share our clothes with anyone?Ans. We should not share our clothes with anybody else as infections mayget transferred in this way.B. Choose the correct word from side box and fill in the blanks :1. A house should be comfortable. bedroom2. Bedroom is for sleeping and relaxing. nets3. We should wear light coloured clothes in summers. comfortable4. The floor of the house should be in level. light5. Windows and doors should be fitted with nets. levelC. Match the following areas in house with their purpose :1. kitchen (a) to eat food with family2. drawing room (b) to store extra items3. bedroom (c) to take a bath4. storeroom (d) to welcome our guests5. toilet (e) to cook food6. bathroom (f) to sleep and relax7. dining room (g) to refresh ourselvesD. Give reasons for the following :1. Windows and gates of a house should be netted. Why?Ans. It adds to the beauty of the house as well as protects it from dust andsmall insects.2. A drawing room should have some decoration. Why?Ans. Drawing room is for accommodating guests and visitors.3. We should not share our clothes with anybody. Why?Ans. Because, infections may get transferred in this way.FlowchartFill up the boxes to complete the flowchart :Rooms in a Housedrawingroomdining roombedroomkitchenstudystoreroombathroomand toiletHorizon Press65Science 'n' Us - 1 to 5
Page 1 and 2: Science'n'UsA COMPLETE SOLUTION OF
Page 3 and 4: 5. Three animals which give birth t
Page 5 and 6: C. Match the following :1. leaf (a)
Page 7 and 8: D. Match the following:1. crow (a)
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Page 11 and 12: 5. What type of claws and toes do c
Page 13 and 14: B. Choose the correct word from sid
Page 15 and 16: 8.STATES OF MATTERExerciseA. Answer
Page 17 and 18: 9.5. Topmost layer of earth's surfa
Page 19 and 20: 10.OUR WONDERFUL BODYExerciseA. Ans
Page 21 and 22: 3. What is the function of incisors
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Page 27 and 28: 3. Four rules of safety in the scho
Page 29 and 30: D. Write True or False against the
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