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Mahaasaagar

Class 6 Social Science · Chapter 2: Mahaasaagar aur Mahaadweep · NCERT Exploring Society: India and Beyond section 2.2

Seekho

Paanch mahaasaagar hain, sab milkar ek vishaal vishwa-samudra: Prashaant (Pacific) (sabse bada aur gehra), Atlantic, Hind, Dakshini (Southern) (Antarctica ke chaaron or) aur Arctic (sabse chhota, Uttari Dhruv ke paas, zyaadatar jama). Hind mahaasaagar akela mahaasaagar hai jo ek desh ke naam par hai.

Samudra ka paani hamesha chalta rehta hai. Lehrein satah par chalti hawa se banti hain. Jwaar-bhaata (tides) samudra ka roz uthna aur girna hai, mukhya roop se Chaand ke khinchaav se. Samudri dhaaraayein samudra ke andar vishaal nadiyon jaisi hain, garam ya thanda paani duniya bhar le jaati hain.

Mahaasaagar aur aapdaayein: tsunami samudra ke neeche bhookamp se uthi vishaal lehar hai. 2004 mein Hind mahaasaagar ke tatton par, Tamil Nadu aur Andaman-Nicobar dweep samet, tsunami aayi. Chakravaat Bangaal ki khaadi jaise garam samudron par bante aur tat par tez hawa aur bhaari baarish laate hain.

Aaj satellite aur chetaavani kendra bhookamp aur chakravaat par nazar rakhte hain, to tat par rehne waalon ko samay par chetaaya aur surakshit aashray mein le jaaya ja sakta hai. Tat ke mangrove jungle bhi badi lehron ke saamne dhaal ki tarah kaam karte hain.

Explore: sabse bade se sabse chhota.

  1. Paanchon mahaasaagar kram mein lagao, sabse bada pehle.

Yaad rakho

  • Paanch jude mahaasaagar: Prashaant, Atlantic, Hind, Dakshini, Arctic; Prashaant sabse bada.
  • Lehrein, jwaar-bhaata aur dhaaraayein samudra ka paani chalaate hain; tsunami aur chakravaat samudri aapdaayein hain.

Quick check

Jwaar-bhaata mukhya roop se kis se hota hai?

  1. Chaand ka khinchaav
  2. Machhliyon ka tairna
  3. Jahaaz
  4. Baarish
Answer

Chaand ka khinchaav. Chaand ka gurutvaakarshan samudra ko kheenchta hai.

Socho

Tumhe kya lagta hai kai tatton par mangrove jungle ab kyun bachaaye jaate hain?

Ek answer

Unki ghani jadein lehron aur toofaani uchhaal ko dheema karti, mitti ko pakadti, aur machhliyon aur pakshiyon ko aashray deti hain. 2004 ki tsunami mein mangrove wale tatton ko kam nuksaan hua.

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.