Learn, Grow, Succeed with eVidya
EVidya In-text Questions Question: Why are cooking utensils generally made of metals? Answer: Cooking utensils are usually made of metals because metals are very good at letting heat pass through them. Materials that let heat pass easily are called good conductors. This helps the heat from the stove reach the food quickly and cook it properly. … Read more
Activity 6.1 – Looking at changes from Grade 5 to 8 Q 1. What were the most commonly observable changes among students? Height – most children grow taller. Weight / strength – many become heavier and stronger. Appearance – some boys show tiny moustache hair; some girls start to grow breasts; both may get pimples. … Read more
Activity 5.1 – Table of common changes Q (a) Complete Table 5.1 – what do you observe for each change? S. No. Change Simple observation 1 Melting ice cubes Ice becomes liquid water. 2 Chopping vegetables Large pieces become many small pieces. 3 Boiling water Water turns to steam (gas) and bubbles. 4 Making popcorn … Read more
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
सेवा में, जनसेवा केंद्र अधिकारी, यूआईडीएआई, चिंचपोकली पश्चिम, मुंबई – 400011 दिनांक : ________ विषय: आधार कार्ड बनाने के लिए आवेदन करने हेतु। महोदय, मैं चिंचपोकली, मुंबई के अशोक नगर क्षेत्र का निवासी हूँ। आधार की वेबसाइट के अनुसार अशोक नगर आपके ही अधिकार क्षेत्र में आता है। इसलिए अपना आधार कार्ड बनवाने हेतु मैं … Read more
अनिल शर्मा, गाँवदेवी रोड़, दादर पश्चिम, मुंबई – ४२ दिनांक : …………………….. प्रिय मित्र अशोक, सप्रेम नमस्कार। मैं यहाँ कुशलता से हूँ और आशा करता हूँ कि तुम भी वहाँ आनंद से होगे। जब से तुम हॉस्टल गए हो तब से तुमसे बातचीत काफी कम हो गयी है। पत्र तो तुम लिखते ही नहीं। इसलिए … 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