Curiosity ke Saath Safar
Class 7 Science · Chapter 1: Hamesha Badalti Science ki Duniya · NCERT Curiosity section
Seekho
Phir se swaagat, khojiyon! Science sab kuch samaata hai, chhota aur bada, paas aur door: patte ke andar ke nanhe cells, Sooraj aur taaron ki chaal, rasoi ke padaarth aur zameen ke neeche behta paani. Is saal hum aur gehre sawaal poochhenge: cheezein kaise kaam karti hain, kyun hoti hain, aur prakriti kaunse pattern dikhaati hai?
Hum padaarthon se shuru karenge: kuch phal khatte kyun, aur haldi ka daag saabun se laal kyun? Phir cells aur taaron se bulb jalaayenge, dhaatu aur adhaatu alag karenge, aur badlaavon ko samjhenge: kuch ulte ho sakte hain, jaise barf ka pighalna, aur kuch nahi, jaise phal ka pakna.
Hum garmi ke behne ko dekhenge, gilaas mein barf se door pahaadon par baarish tak. Apne shareer ko dekhenge, jo kishor umar mein tezi se badalta hai, aur dekhenge ki jaanvar aur paudhe kaise khaate, saans lete aur khaana pahunchaate hain. Samay aur gati naapenge, roshni aur parchhaai se khelenge, aur ant mein Prithvi, Chaand aur Sooraj ka naach dekhenge jo din, mausam aur grahan deta hai.
Ye chapter alag dikhte hain, par jude hain: physics ka ek vichaar biology mein sawaal jaga sakta hai. Science sirf tathya nahi; ye dekhne, poochhne, jaanchne aur sudhaarne ki prakriya hai. Iske saath zimmedaari bhi aati hai: insaan ke kaam prakriti par asar daalte hain, aur science ek tikau duniya banaane mein madad kar sakta hai.
Explore: science ka kaunsa kshetra?
- Har sawaal ko us kshetra mein sort karo jo use mukhya roop se khojta hai.
Yaad rakho
- Science chhota-bada, paas-door sab samaata hai, aur iske kshetra jude hain.
- Science dekhne, poochhne, jaanchne aur sudhaarne ki prakriya hai.
Quick check
Science ek prakriya hai, iska matlab?
- hum dekhte, poochhte, jaanchte aur vichaar sudhaarte hain
- hum sirf tathya ratte hain
- iske jawaab kabhi nahi badalte
- sirf scientist kar sakte hain
Answer
hum dekhte, poochhte, jaanchte aur vichaar sudhaarte hain. Science sawaal poochhkar aur vichaar baar-baar jaanchkar badhta hai.
Socho
Kaagaz ke hawaai jahaaz ne udaan ki asli khoj ko prerit kiya. Kaunsi rozmarra ki cheez tumhe jigyaasu banaati hai, aur tum uske baare mein kya poochhoge?
Ek answer
Koi bhi sochi-samjhi baat chalegi. Jaise: pressure cooker: seeti kyun bajti hai, aur khaana jaldi kyun pakta hai? Achchha sawaal prayog se jaancha ja sakta 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.