Paani
Class 6 Science · Chapter 11: Prakriti ke Khazaane · NCERT Curiosity section 11.2
Seekho
Dharti ka zyaadatar hissa paani se dhaka hai, par lagbhag saara namkeen samudra ka paani hai. Sirf chhota hissa meetha paani hai jo hum use kar sakte hain, aur uska bahut saara barf ke roop mein jama hai. Isliye meetha paani keemti hai!
Hum meetha paani baarish, nadiyon, jheelon, taalaabon aur bhoojal (kuon aur handpump se) se paate hain. Baarish ka paani zameen mein samaakar bhoojal bharta hai.
Rajasthan aur Gujarat jaise sookhe ilaakon mein logon ne sadiyon pehle sundar baoli/vav aur taalaab banaaye taaki baarish ka paani jama ho. Aaj hum rainwater harvesting kar sakte hain: chhat ki baarish tankon mein jama karna ya zameen mein samaane dena.
Explore: paani bachao ya barbaad?
- Har kaam sort karo.
Yaad rakho
- Dharti ke paani ka chhota hissa hi upyogi meetha paani hai.
- Rainwater harvesting aur ghar par paani bachaana is khazaane ki raksha karte hain.
Quick check
Meetha paani kyun bachaana chahiye?
- Dharti ke paani ka sirf chhota hissa meetha aur upyogi hai
- Samudra ka paani peene laayak hai
- Paani kahin khatam nahi hota
- Baarish kabhi nahi hoti
Answer
Dharti ke paani ka sirf chhota hissa meetha aur upyogi hai. Zyaadatar paani namkeen samudra ya barf hai.
Socho
Tumhara school paani bachaane ya jama karne ke do tareeke batao.
Ek answer
Udaharan: chhat ka baarish ka paani tank mein jama karna; tapakte nal theek karna; sabzi dhone ka paani bageeche mein daalna; nal band karne ki yaad dilaane wale board lagaana.
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.