Chapter 2: Mahaasaagar aur Mahaadweep
Hamare grah ka zyaadatar hissa paani se dhaka hai. Is chapter mein hum dekhenge Dharti par zameen aur paani kaise faile hain, paanch mahaasaagar aur saat mahaadweep se milenge, aur jaanenge ki mahaasaagar jeevan ko kaise aakaar dete hain.
Is chapter mein tum
- Dharti par zameen aur paani ki tulna karna
- paanch mahaasaagar batana aur lehrein, jwaar-bhaata, dhaaraayein aur samudri aapdaayein samjhaana
- saat mahaadweep aur kuch dweep batana
- mahaasaagar kyun zaroori hain aur unhe kaise bachaayein
Topics
- Dharti par Paani aur Zameen ka Bantwaara NCERT 2.1
Dharti ki satah ka lagbhag 71% paani aur 29% zameen hai; zyaadatar paani khaara hai.
- Mahaasaagar NCERT 2.2
Paanch jude mahaasaagar: Prashaant, Atlantic, Hind, Dakshini, Arctic; Prashaant sabse bada.
- Mahaadweep NCERT 2.3
Saat mahaadweep: Asia, Africa, North America, South America, Antarctica, Europe, Australia.
- Mahaasaagar aur Jeevan NCERT 2.4
Mahaasaagar jeevan se bhare hain aur khaana, oxygen, vyapaar ke raaste aur naram mausam dete hain.
Key words
- Continent
- bahut bada bhoo-bhaag
- Ocean
- khaare paani ka vishaal bhandaar
- Island
- chaaron taraf paani se ghiri zameen
- Tide
- samudra ka roz uthna aur girna
- Current
- samudra ke andar chalta paani
- Tsunami
- samudra ke neeche bhookamp se bani vishaal lehar
Summary
- Dharti ki satah ka lagbhag 71% paani hai, zyaadatar khaara; Uttari Golardh mein zyaada zameen.
- Paanch jude mahaasaagar; lehrein, jwaar-bhaata aur dhaaraayein paani chalaati hain; tsunami aur chakravaat aapdaayein hain.
- Saat mahaadweep jo dheere khisakte hain, aur kai dweep.
- Mahaasaagar jeevan aur vyapaar ko sahaara dete hain; pradooshan aur zyaada machhli pakadna nuksaan karte hain.