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Figure it Out (Page 108) Q. List all the linear pairs and vertically opposite angles you observe in Fig. 5.3: Ans: Linear Pairs (adjacent angles whose sum = 180°): Pairs …

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Figure it Out (Page 84-85) 1. Write formulas for the perimeter of:(a) triangle with all sides equal.(b) a regular pentagon (as we have learnt last year, we use the word …

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Page 46-47 In the following figure, screws are placed above a scale. Measure them and write their length in the space provided. Ans:  (Q.) Which scale helped you measure the …

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2.1 Simple Expressions (Page 24) Choose your favourite number and write as many expressions as you can having that value.Ans: We can write different arithmetic expressions for this number as follows:12 …

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Page 2 1. What if a person ate 3 varieties of rice every day? Will they be able to taste all the lakh varieties in a 100 year lifetime? Find …

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Earth, Moon, and the Sun 1. In Fig. 12.17, how many hours of sunlight do the North Pole and the South Pole receive during one rotation of the Earth? Answer: …

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Light: Shadows and Reflections 1. Which of the following are luminous objects? Mars, Moon, Pole Star, Sun, Venus, Mirror Answer:  The luminous objects are the Sun and the Pole Star. …

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Life Processes in Plants 1. Complete the following table Answer: 2. Imagine a situation where all the organisms that carry out photosynthesis on the earth have disappeared. What would be …

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Life Processes in Animals 1. Complete the journey of food through the alimentary canal by filling up the boxes with appropriate parts- Food → Mouth → ______ → Stomach → …

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Measurement of Time and Motion 1. Calculate the speed of a car that travels 150 metres in 10 seconds. Express your answer in km/h. Solution: Distance = 150 m Time …

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