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Chapter 4 – The World of Metals and Non-metals

4.1 Properties of Materials Activity 4.1 – Table 4.1: β€œAre 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

Chapter 3 – Electricity: Circuits and their Components

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

The Raven and the Fox

LetΒ usΒ doΒ theseΒ activitiesΒ beforeΒ weΒ read We know that frogs croak.Β Did you know that ravens also croak?Answer: Yes. Ravens croak too. Which animal is shown to be cunning in stories?Β Circle the correct answer.(a) tiger (b) fox (c) bearAnswer: (b) fox LetΒ usΒ discuss 1Β Fill‑in‑the‑blanks (a)Β StanzaΒ 1 (i) MrΒ Raven is a ___ (birdΒ /Β frog). → bird (ii) The name of the fox is ___ (RavenΒ /Β Reynard). → Reynard (iii) MrΒ Raven … Read more

Chap 12 – Beyond Earth

──────────────────────────────────────────────────────── IN-TEXT QUESTIONS ──────────────────────────────────────────────────────── Question: “Do we find patterns among the stars just for fun or is there some use of these patterns?” Answer: β€’ Long ago, people used star patterns (constellations) to help find directions when traveling. β€’ Sailors and travelers could recognize these patterns in the night sky and use them to navigate. … Read more

Chap 11 – Nature’s Treasures

──────────────────────────────────────────────────────── 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): β€’ If there is no sunlight, plants cannot make food and might start to weaken. β€’ We would … Read more

Chap 10 – Living Creatures: Exploring their Characteristics

──────────────────────────────────────────────────────── 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: β€’ We can grow and breathe on our own, but a car cannot. β€’ Because a car does not grow, breathe, or show other living features, … Read more

Chap 9 – Methods of Separation in Everyday Life

──────────────────────────────────────────────────────── 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: β€’ 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