Class 6 Science · Chapter 12
Short answer:
Chapter 12 "Beyond Earth" Class 6 Science Curiosity ka final chapter hai jo solar system, grah, Chaand, taare, constellations, aur satellites (natural vs artificial) padhata hai. Key facts: Surya ek taara hai jo khud roshni banata hai; grah aur Chaand sirf reflect karte hain; solar system mein 8 grah hain (Budh se Varun tak); constellations taaron ke pattern hote hain jaise Saptarishi; aur Bharat ke Chandrayaan jaise missions is chapter ka important part hain.
Chapter 12 "Beyond Earth" NCERT Class 6 Science ki nayi Curiosity textbook (2026-27 rationalised syllabus) ka aakhri aur sabse fascinating chapter hai. Jaise kisi bhi science ki neev uske fundamental concepts se banti hai, waise hi yeh chapter students ko Prithvi ki boundary se bahar — solar system, grahon, taaron, aur satellites ki duniya se parichit karata hai. Ye chapter students ke andar space aur astronomy ke liye curiosity jagata hai aur unhe scientifically explain karta hai ki asmaan mein humein jo kuch dikhta hai woh kya hai aur kyun dikhta hai.
Is chapter mein hum padhenge Surya (Sun) kya hai, hamare solar system mein kitne grah hain aur unka order kya hai, Chaand (Moon) ki phases kaise banti hain, taare aur constellations kya hote hain, aur natural vs artificial satellites mein kya farak hai. Saath hi, chapter Bharat ke space exploration journey — Aryabhata se lekar Chandrayaan tak — ko bhi cover karta hai, jo students mein national pride aur scientific temperament dono develop karta hai.
Chapter 12 Summary — 5 Minute Revision
"Beyond Earth" chapter Class 6 Science Curiosity book ka woh chapter hai jo students ko Prithvi ke bahar ki duniya se rubaru karata hai — solar system ka structure, grahon ka Surya se distance-wise order, Chaand ki phases aur uski roshni ka source, taare aur constellations, aur satellites ki do categories (natural jaise Chaand, artificial jaise Chandrayaan). Chapter ka core learning yeh hai ki taare khud roshni banate hain jabki grah aur upgrah sirf reflect karte hain — yeh basic distinction poore chapter ki neev hai. Saath hi Bharat ke space achievements (Aryabhata, Chandrayaan-3 ki South Pole landing) is chapter ko sirf theoretical nahi balki inspirational bhi banate hain. Exam ke perspective se, grahon ka sequence yaad rakhna, natural vs artificial satellite ka difference, aur constellation ki definition — yeh teen cheezein sabse zyada important hain.
In-Text Questions — Solutions
Kya hum din mein bhi taare dekh sakte hain?
Nahi, din mein taare dikhte nahi hain kyunki Surya ki tez roshni unki halki roshni ko dab deti hai (overpower kar deti hai). Taare hamesha maujood hote hain, lekin sirf raat ko hi Surya ki roshni na hone ki wajah se hum unhe dekh paate hain.
Grah aur taare mein basic difference kya hai?
Taare (jaise Surya) apni khud ki roshni banate hain nuclear reactions ki wajah se, jabki grah (jaise Prithvi, Mangal) khud roshni nahi banate — woh sirf Surya ki roshni reflect karte hain isliye humein chamakte hue dikhte hain.
Chandrayaan-3 kya achieve kiya tha?
Chandrayaan-3 Bharat ka mission tha jisne Chaand ke South Pole region par successfully soft-landing ki — is achievement ke saath Bharat aisa karne wala pehla desh bana. Yeh mission Beyond Earth chapter mein Bharat ke space achievements ke context mein padhaya jaata hai.
Exercise Questions — Solutions (Q1–Q6)
1. Khaali sthaan bharo: Surya ke sabse nazdeek grah ka naam ________ hai.
Answer: Budh (Mercury). Surya se distance ke hisaab se order hai — Budh, Shukra, Prithvi, Mangal, Brihaspati, Shani, Arun, Varun.
2. Sahi ya galat: Chaand khud ki roshni se chamakta hai.
Answer: Galat. Chaand ke paas khud ki roshni nahi hai — woh sirf Surya ki roshni ko reflect (paravartit) karta hai, isliye humein chamakta hua dikhta hai.
3. Do khagoliya pind (celestial bodies) ka naam batao jo apni roshni khud generate karte hain, aur do jo nahi karte.
Apni roshni khud banane wale, aur reflect karne wale, dono ke examples do.
Answer:
- Khud roshni banane wale: Surya (Sun), aur raat ke asmaan mein dikhne wale taare (stars) — jaise Sirius.
- Reflect karne wale (khud roshni nahi): Chaand (Moon), Prithvi samet sabhi grah (planets) jaise Mangal, Shukra.
4. Ek tarah-vithi (constellation) kya hoti hai? Kisi ek prasiddh constellation ka naam batao.
Answer: Constellation taaron ka ek aisa samooh (group) hai jo asmaan mein dekhne par kisi pehchaani jaane wali aakriti (pattern/shape) banata hai — jaise koi jaanwar ya vastu. Example: Saptarishi (Big Dipper / Ursa Major) — 7 chamakdaar taaron ka group jo bhaalu jaisi aakriti banata hai aur Dhruv tara (Pole Star) dhoondhne mein madad karta hai.
5. Kritrim upgrah (artificial satellite) aur prakritik upgrah (natural satellite) mein antar batao. Ek-ek example do.
Answer:
Prakritik upgrah: Yeh naturally banta hai, insaan ke banaye bina — Example: Chaand, jo Prithvi ka natural satellite hai.
Kritrim upgrah: Yeh insaan dwara banaya aur launch kiya jaata hai kisi grah ki parikrama karne ke liye — Example: Chandrayaan-3 ya INSAT jaisa communication satellite.
6. Bataiye ki Surya, ek grah, aur ek upgrah — teenon mein size ke hisaab se sabse bada kaun sa hoga (general sense mein), aur kyun?
Answer: General sense mein Surya (Sun) sabse bada hota hai kyunki woh ek taara (star) hai jiske paas apni gravity aur nuclear fusion se energy banane ki capacity hoti hai, aur uska size grahon se lakhon guna zyada hota hai. Uske baad grah (planet), aur sabse chhota generally uska upgrah (satellite/moon) hota hai — kyunki upgrah grah ki parikrama karta hai isliye woh grah se chhota hona chahiye.
Important Equations — Ek Nazar Me
| Concept | Key Rule / Fact |
|---|---|
| Solar System order (Surya se distance) | Budh < Shukra < Prithvi < Mangal < Brihaspati < Shani < Arun < Varun |
| Roshni ka source | Sirf taare (jaise Surya) khud roshni banate hain; grah aur upgrah sirf reflect karte hain |
| Natural satellite | Naturally bana hua khagoliya pind jo kisi grah ki parikrama karta hai (jaise Chaand) |
| Artificial satellite | Insaan dwara banaya gaya upgrah jo kisi grah ki parikrama ke liye launch kiya jaata hai (jaise Chandrayaan, INSAT) |
| Constellation | Taaron ka group jo asmaan mein ek pehchaani jaane wali aakriti banata hai (jaise Saptarishi) |
| Sabse bada grah | Brihaspati (Jupiter) — solar system ka sabse bada grah |
| Sabse chhota grah | Budh (Mercury) — solar system ka sabse chhota grah |
↔ Table ko side me swipe karein
Common Mistakes — Yahan Marks Kat te Hain
- Students often confuse karte hain ki Chaand khud ki roshni se chamakta hai — jabki reality mein woh sirf Surya ki roshni reflect karta hai.
- Grahon (planets) aur taaron (stars) ke beech difference clear nahi hota — bahut se students Surya ko bhi ek 'grah' bol dete hain, jabki Surya ek taara hai.
- Solar system mein grahon ka Surya se distance order galat likh dete hain — Budh-Shukra-Prithvi-Mangal-Brihaspati-Shani-Arun-Varun ka sahi sequence yaad rakhna zaroori hai.
- Natural satellite aur artificial satellite ko mix-up kar dete hain — Chaand natural hai, jabki Chandrayaan ya INSAT artificial (man-made) satellites hain.
- Constellation ko random taaron ka group samajh lete hain, jabki yeh ek specific pehchaani jaane wali pattern/aakriti hoti hai jaise Saptarishi.
- Din mein taare 'gayab ho jaate hain' aisa likh dete hain — actually mein taare hamesha maujood hote hain, sirf Surya ki tez roshni ki wajah se din mein dikhte nahi hain.
Board-Style Important Questions
- Class 6 board-level assessments mein 'Solar system ke grahon ka Surya se distance ke hisaab se sahi order likho' jaisa short-answer question common hai.
- 'Natural aur artificial satellite mein antar batao, ek-ek example ke saath' — yeh conceptual difference-based question frequently poocha jaata hai.
- 'Chaand ki roshni ka source kya hai?' jaisa reasoning-based short question chapter ke core concept (reflection vs self-luminous) ko test karta hai.
- Constellation define karke ek example dene wala question (jaise Saptarishi) diagram-based ya short-answer format mein aata hai.
- Bharat ke space missions (Aryabhata, Chandrayaan) par short note likhne wala question — general awareness aur chapter content dono test karta hai.
- Assertion-Reason type question jisme 'Surya ek taara hai, grah nahi' jaisi statement ki correctness judge karni hoti hai — yeh conceptual clarity check karta hai.
Aksar Poochhe Jaane Wale Sawaal
Class 6 Science Curiosity book me Beyond Earth chapter number kaunsa hai?
Ye naye rationalised NCERT Class 6 Science Curiosity textbook (2026-27 syllabus) ka Chapter 12 hai — poori book ka aakhri aur final chapter.
Beyond Earth chapter me kitne grah padhaye jaate hain aur unka sahi order kya hai?
Solar system me 8 grah hain, Surya se distance ke hisaab se sahi order hai — Budh, Shukra, Prithvi, Mangal, Brihaspati, Shani, Arun, aur Varun.
Taare aur grah mein basic difference kya hai?
Taare (jaise Surya) apni khud ki roshni banate hain, jabki grah khud roshni nahi banate — woh sirf Surya ki roshni reflect karte hain isliye chamakte hue dikhte hain.
Natural satellite aur artificial satellite mein kya farak hai?
Natural satellite naturally banta hai jaise Chaand, jabki artificial satellite insaan dwara banaya aur launch kiya jaata hai kisi grah ki parikrama karne ke liye, jaise Chandrayaan ya INSAT.
Is chapter ko revise karne ka sabse aasan tarika kya hai?
Grahon ka sahi sequence yaad rakho, natural vs artificial satellite ka difference practice karo, aur constellation ki definition ek example (jaise Saptarishi) ke saath revise karo — ye teen cheezein exam me sabse zyada poochi jaati hain.
Kya ye NCERT Class 6 Science solutions free hain?
Haan, is page par diye gaye saare in-text aur exercise solutions students ke liye free available hain, taaki concept clarity ke saath practice ki ja sake.
Class 6 Science — Saare Chapters
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