Class 6 Science Chapter 8: A Journey through States of Water (Hinglish Notes)
Ye chapter 5 lines mein
Paani teen states mein milta hai: solid ice, liquid paani aur gas water vapour. Garam karne pe ice paani banti hai (melting) aur paani vapour banta hai (evaporation); thanda karne pe ulta hota hai (condensation aur freezing). Evaporation hamesha chalta rehta hai, zyada exposed area, dhoop, hawa aur sookhi hawa mein tez hota hai, aur thandak deta hai. Upar uthi vapour baadal banti hai aur baarish, ole ya barf ban ke wapas girti hai: yahi water cycle hai.
Kya ice aur paani ek hi cheez hain?
Haan. Ice ka tukda cup mein chhod do to wo paani ban jaata hai; paani freezer mein rakho to wo phir ice ban jaata hai. Na kuch joda gaya, na kuch nikala gaya, isliye ice aur paani ek hi padarth ke do roop hain. In roopon ko states kehte hain. Phir bhi dono alag tarah behave karte hain: paani behta hai aur chhalakta hai, ice nahi.
Paani gayab kahan ho jaata hai?
Puddle chhote ho jaate hain aur dhule bartan sookh jaate hain. Steel ki plate pe rakha ek chammach paani gayab ho jaata hai, aur plate ka neeche wala hissa kabhi geela nahi hota, yaani paani rish ke nahi gaya. Wo water vapour ban gaya, jo paani ki gas state hai. Is badlaav ko evaporation kehte hain, aur ye hamesha chalta rehta hai, room temperature pe bhi. Aur padho: evaporation aur condensation.
Thande glass pe boondein kahan se aati hain?
Thande paani ke glass mein ice daalo, to thodi der mein glass ke bahar boondein aa jaati hain. Ye rish ke nahi aatin: andar paani ka level nahi girta, aur digital balance pe glass bhaari bhi ho jaata hai. Ye boondein hawa ki water vapour se banti hain, jo thande glass ko chhoote hi wapas liquid ban jaati hai. Ise condensation kehte hain. Paudhon pe os bhi aise hi banti hai. Hawa mein water vapour ki maatra ko humidity kehte hain.
Paani ki teen states kaun si hain?
Ice (solid) apni shape banaye rakhti hai. Paani (liquid) behta hai aur bartan ki shape le leta hai, par uska volume wahi rehta hai. Water vapour (gas) jitni jagah mile, poori mein phail jaati hai. Wax, tel aur ghee bhi solid ya liquid ho sakte hain. Dekho: paani ki teen states.
Paani ki state kaise badalte hain?
Garam karne pe ice paani banti hai (melting) aur paani water vapour banta hai. Thanda karne pe freezer mein paani ice banta hai (freezing), aur water vapour paani banti hai. Mombatti ka wax lau ke paas pighalta hai aur thanda hoke phir jam jaata hai, aur sardi mein nariyal ka tel aksar jam jaata hai. Atmospheric Water Generator (AWG) machines nami wali hawa se condensation ke zariye peene ka paani ikattha karti hain.
Paani tez kaise evaporate hota hai?
Bada exposed area (plate pe rakha paani bottle ke dhakkan wale paani se pehle sookhta hai), dhoop, chalti hawa aur sookhi hawa, ye sab evaporation ko tez karte hain. Baarish wale nami bhare dinon mein kapde dheere sookhte hain. Dekho: evaporation ke factors.
Evaporation se thandak kyun milti hai?
Evaporation jis sateh pe hota hai, wahan se garmi leta hai. Matke ka paani mitti se rish ke bahar aata hai aur wahan evaporate hota hai, isliye andar ka paani thanda rehta hai. Pankhe ke neeche hume thandak isliye lagti hai kyunki pankha paseene ko evaporate hone mein madad karta hai. Pot-in-pot cooler geeli ret ki madad se, bina bijli ke, phal aur sabziyan taaza rakhta hai.
Baadal se baarish kaise hoti hai?
Water vapour hawa se halki hoti hai, isliye upar uthti hai. Zameen se bahut upar hawa thandi hoti hai, aur vapour dhool ke kanon ke aas-paas condense hoke chhoti boondein ban jaati hai. Hawa mein tairti boondon se baadal bante hain. Jab bahut si boondein milkar itni bhaari ho jaati hain ki tair na sakein, to wo baarish, aur kabhi ole ya barf ban ke girti hain. Phir paani nadiyon aur zameen ke andar se hote hue samudra mein wapas pahunchta hai. Paani ki ye kabhi na rukne wali yatra hi water cycle hai. Dharti ke paani ka sirf chhota hissa hi use ke laayak hai, isliye paani bachao aur nadiyon-jheelon ko saaf rakho.
Key terms (zaroori shabd)
| Term | Matlab |
|---|---|
| States of water (paani ki avasthayein) | Paani ke teen roop: solid (ice), liquid (paani) aur gas (water vapour). Teeno ek hi padarth hain. |
| Water vapour (jal vaashp) | Gas state mein paani. Ye dikhti nahi, aur hamare aas-paas ki hawa mein hamesha hoti hai. |
| Evaporation (vaashpeekaran) | Liquid paani ka water vapour banna. Ye hamesha hota hai, room temperature pe bhi. |
| Condensation (sanghanan) | Water vapour ka wapas liquid paani banna, jaise kisi thandi sateh ko chhoone pe. |
| Melting (pighalna) | Garam karne pe solid ka liquid banna, jaise ice ka paani banna ya mombatti ka wax pighalna. |
| Freezing (jamna) | Thanda karne pe liquid ka solid banna, jaise freezer mein paani ka ice banna. |
| Humidity (nami) | Hawa mein water vapour ki maatra. Baarish wale din humidity zyada hoti hai. |
| Exposed area | Liquid ki wo sateh jo hawa ke sampark mein hai. Exposed area jitna bada, evaporation utna tez. |
| Cooling effect (thandak) | Evaporation jis sateh pe hota hai, wahan se garmi leta hai, isliye wo sateh thandi hoti hai. Example: matke ka paani. |
| Steam | Garam paani se nikalti water vapour. Vapour khud nahi dikhti; steam mein paani ki chhoti boondein use dikhaati hain. |
| Dew (os) | Ghaas aur patton pe paani ki boondein, jo hawa ki water vapour ke thandi sateh pe condense hone se banti hain. Ye zyadatar subah dikhti hain. |
| Water cycle (jal chakra) | Evaporation, condensation aur baarish, ole ya barf ke zariye paani ka dharti ki sateh aur hawa ke beech lagaataar ghoomna. |
Is chapter ke topics
Practice karo
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Water vapour ke wapas liquid paani banne ko kya kehte hain?
Jawab dekho
Jawab: (b) condensation
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Paani ki kaunsi state jitni jagah mile, poori mein phail jaati hai?
Jawab dekho
Jawab: (c) Water vapour
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Geele kapde sabse jaldi kab sookhte hain?
Jawab dekho
Jawab: (b) Hawa wale din dhoop mein phaila ke daalne pe Phailane se exposed area badhta hai, aur dhoop aur hawa dono evaporation ko tez karte hain.
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Matke (mitti ke ghade) ka paani thanda kyun rehta hai?
Jawab dekho
Jawab: (b) Paani mitti se rishta hai aur evaporate hota hai, jisse matka thanda hota hai
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Barf wale thande paani ke glass ke bahar ki boondein kahan se aati hain?
Jawab dekho
Jawab: (b) Hawa ki water vapour ke condense hone se Andar paani ka level nahi girta, aur glass bhaari ho jaata hai: paani hawa se aata hai.
Students ke sawal
Class 6 Science Chapter 8 mein kya padhte hain?
Paani ki teen states aur ek state se doosri mein badalna, evaporation, condensation, humidity, evaporation ko tez ya dheema karne wali cheezein, evaporation se thandak, aur baadalon se baarish kaise hoti hai, yaani water cycle.
Kya “A Journey through States of Water” nayi Curiosity book mein hai?
Haan. Ye Curiosity ka Chapter 8 hai, jo 2026-27 session mein Class 6 Science ki textbook hai.
Chapter 8 ki exercise mein kitne sawal hain?
“Let us enhance our learning” mein 10 sawal hain. Saare sawalon ke jawab, Activity 8.6 ke diagram ke saath, hamare is chapter ke NCERT solutions page pe hain.
Koi sawal atak gaya?
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