Learn, Grow, Succeed with eVidya
4.1 Properties of Materials Activity 4.1 – Table 4.1: “Are they lustrous? Hard or soft? What happens when hammered?” S. No. Object / material Appearance Hard / soft Effect of hammering 1 Piece of copper Shiny (lustrous) Hard Flattens into a thin sheet 2 Piece of aluminium Shiny (lustrous) Hard Flattens into a thin sheet … Read more
1. Helping Nihal – uses of electricity Q 1 (a). Fill the blank lines in Nihal’s lists. Heading Some more items you can write Entertainment Video game console, music player Communication Land-line phone, e-mail device Lighting LED bulb, emergency lamp Cooking Electric rice-cooker, sandwich-maker Transportation Electric bicycle, airport escalator Heating & Cooling Water cooler Others … Read more
Activity 2.1 – Litmus test (Table 2.1) Question Fill the table after putting one drop of each sample on blue and red litmus paper. Answer S. No. Sample Blue litmus turns Red litmus turns 1 Lemon juice Red No change (stays red) 2 Soap solution No change (stays blue) Blue 3 Amla juice Red No … Read more
Let us do these activities before we read We know that frogs croak. Did you know that ravens also croak?Answer: Yes. Ravens croak too. Which animal is shown to be cunning in stories? Circle the correct answer.(a) tiger (b) fox (c) bearAnswer: (b) fox Let us discuss 1 Fill‑in‑the‑blanks (a) Stanza 1 (i) Mr Raven is a ___ (bird / frog). → bird (ii) The name of the fox is ___ (Raven / Reynard). → Reynard (iii) Mr Raven … Read more
──────────────────────────────────────────────────────── IN-TEXT QUESTIONS ──────────────────────────────────────────────────────── Question: “Do we find patterns among the stars just for fun or is there some use of these patterns?” Answer: • Long ago, people used star patterns (constellations) to help find directions when traveling. • Sailors and travelers could recognize these patterns in the night sky and use them to navigate. … Read more
──────────────────────────────────────────────────────── IN-TEXT QUESTIONS ──────────────────────────────────────────────────────── Question: “What will happen if the Sun is not visible for a few days? (1) We may have to depend on artificial lighting during the day. (2) … (3) …” Answer (sample ideas): • If there is no sunlight, plants cannot make food and might start to weaken. • We would … Read more
──────────────────────────────────────────────────────── IN-TEXT QUESTIONS ──────────────────────────────────────────────────────── Question: “Which characteristics help you in differentiating yourself from a car? For instance, a car does not grow. Does it mean it is non-living?” Answer: • We can grow and breathe on our own, but a car cannot. • Because a car does not grow, breathe, or show other living features, … Read more
──────────────────────────────────────────────────────── IN-TEXT QUESTIONS ──────────────────────────────────────────────────────── Question: “A small amount of puffed rice is mixed with chana dal. Can you think of separating the mixture by any method other than handpicking?” Answer: • Yes, we can use winnowing if there is a gentle breeze or we can blow air. Puffed rice is lighter and will blow away, … Read more
──────────────────────────────────────────────────────── IN-TEXT QUESTIONS ──────────────────────────────────────────────────────── Question: “What observations can you make about your food from the data collected in Table 3.1? Do you eat the same kind of food in every meal or do your choices vary? Compare your list with those prepared by your friends. Find similarities and differences in the food consumed by you … Read more
In-text Question (page 93) Question: On the basis of what you have read about these issues, do you think Indians were discontented with British rule? If so, how were different groups and classes dissatisfied? Answer: Yes, Indians were discontented with British rule. Different groups had different reasons: • Peasants were unhappy because high land taxes … Read more