Aas-paas ki Cheezon ko Dekhna
Class 6 Science · Chapter 6: Hamare Aas-paas ke Padaarth · NCERT Curiosity section 6.1
Seekho
Kaksha mein dekho: desk, blackboard, paani ki bottle, steel ka tiffin, kapde ka thaila, plastic ka ruler, kaanch ki khidki. Har cheez ek ya zyada padaarthon (materials) se bani hai: lakdi, dhaatu, plastic, kaanch, kapda, kaagaz, rubber …
Ek hi cheez alag padaarthon se ban sakti hai: gilaas kaanch, steel, plastic ya mitti ka ho sakta hai. Aur ek hi padaarth se kai cheezein banti hain: lakdi se kursi, pencil, darwaze aur cricket bat.
Khaana banaane ka bartan dhaatu ka kyun hai, kaagaz ka kyun nahi? Barsaati plastic ki kyun hai, sooti kyun nahi? Hum kisi cheez ke liye padaarth uske gunon (properties) ki wajah se chunte hain: wo kaisa dikhta, lagta aur vyavhaar karta hai.
Praacheen Bhaarat ke log padaarth chunne mein maahir the: shehron ke liye pakki mitti ki eentein, auzaaron ke liye taamba aur kaansa, kapde ke liye kapaas, aur moti-choodiyon ke liye kaanch. Inme se kai aaj bhi kaam aate hain.
Explore: ye kis se bana hai?
- Har cheez ko uske mukhya padaarth se sort karo.
Yaad rakho
- Cheezein lakdi, dhaatu, plastic, kaanch, kapde aur kaagaz jaise padaarthon se bani hain.
- Hum cheezon ke liye padaarth unke gunon ki wajah se chunte hain.
Quick check
Kaunsa kathan sach hai?
- Ek cheez alag padaarthon se ban sakti hai
- Har padaarth se sirf ek cheez banti hai
- Saari cheezein plastic ki hain
- Padaarthon ke gun nahi hote
Answer
Ek cheez alag padaarthon se ban sakti hai. Gilaas kaanch, steel, plastic ya mitti ka ho sakta hai.
Socho
Kadhaai dhaatu ki kyun hoti hai par uska handle aksar lakdi ya sakht plastic ka kyun?
Ek answer
Dhaatu garmi jaldi aage jaane deti hai taaki khaana pake. Lakdi aur sakht plastic garmi aasaani se nahi jaane dete, isliye handle pakadne laayak thanda rehta hai.
Practice
Teen levels (easy, medium, hard) ke naye sawaalon se practice karo, kuch hands-on, hints aur hal ke saath. Topic poora karne ke liye pichhle 5 mein se 4 sahi karo.