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Dharti par Paani aur Zameen ka Bantwaara

Class 6 Social Science · Chapter 2: Mahaasaagar aur Mahaadweep · NCERT Exploring Society: India and Beyond section 2.1

Seekho

Neel ke naana naavik the. Wo Neel ko batate hain ki mahaasaagar ke beech jahaaz se kai din chalte raho aur har taraf sirf paani dikhta hai. "Hamare grah ka naam Dharti nahi, Samudra hona chahiye!" wo hanste hain.

Wo sahi hain: Dharti ki satah ka lagbhag 71% paani se dhaka hai aur sirf 29% zameen hai. Jaal dekho: 100 mein se 71 khaane paani (neele) aur 29 zameen (naarangi). Isiliye antariksh se Dharti neela grah dikhti hai.

Is paani ka lagbhag saara (97%) khaara samudri paani hai. Sirf chhota hissa meetha paani hai, aur uska zyaadatar barf ki chaadaron aur glaciers mein jama hai. Isliye nadiyon, jheelon aur zameen ke neeche ka meetha paani bahut keemti hai.

Zameen aur paani baraabar nahi faile. Uttari Golardh mein kaafi zyaada zameen hai; Dakshini Golardh zyaadatar samudra hai. Bade bhoo-bhaag mahaadweep aur vishaal jal-bhandaar mahaasaagar hain. Zameen se kuch ghire chhote jal-bhandaar saagar, khaadi hain, jaise Arab saagar aur Bangaal ki khaadi.

Explore: zameen ya paani?

  1. Har card sort karo.

Yaad rakho

  • Dharti ki satah ka lagbhag 71% paani aur 29% zameen hai; zyaadatar paani khaara hai.
  • Uttari Golardh mein zyaada zameen; Dakshini Golardh zyaadatar samudra.

Quick check

Dharti ki satah zyaadatar zameen hai ya paani?

  1. Paani (lagbhag 71%)
  2. Zameen (lagbhag 71%)
  3. Theek aadha-aadha
  4. Sirf barf
Answer

Paani (lagbhag 71%). Dharti ki satah ka lagbhag teen-chauthai paani hai.

Socho

Agar Dharti par itna paani hai to kai jagah paani ki kami kyun hai?

Ek answer

Zyaadatar khaara ya jama hua hai. Kaam ka meetha paani bahut thoda, asmaan roop se faila, aur aksar barbaad ya pradooshit hota 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.