bhoopraavaar

budh grah ka androoni dhaancha - '2' dvaara naamaankit beech ki moti parat bhoopraavaar (maintal) hai

bhoopraavaar ya maintal (angreji: Mantle) ya praavaar bhoovijnyaaan mein kisi patthareele grah ya praakrutik upagrah ki ek parat ko kehte hain. yeh sabse baahari bhoopatal (krast) naamak parat ke neeche lekin bhookendr ke oopar aur use dhake hue hoti hai. bhoopatal ke mukaabale mein bhoopraavaar parat bahut moti hoti hai. hamaari pruthvi mein bhoopraavaar lagbhag 2,900 kimi moti hai aur yeh pruthvi ke kul ghanafal (volyoom) ka 84% bhaag isi mein sammilit hai.[1][2]

inhein bhi dekhein

sandarbh

  1. Science and Health Today, pp. 247, Rex Bookstore, Inc., ISBN 9789712318962, ... The earth is composed of three layers: the crust, the mantle, and the core. Look at the illustration. The crust is the thinnest and the outermost layer. The mantle is the thickest and the middle layer. The core is the innermost layer ...
  2. Encyclopedia of Volcanoes, Haraldur Sigurdsson, Bruce Houghton, Hazel Rymer, John Stix, Steve McNutt, pp. 52, Academic Press, 1999, ISBN 9780080547985, ... Given that the mantle makes up 84% and the core 15% of the planet on an atomic basis, the bulk of the Earth's internal heat probably comes from the rocky portion rather than the metallic core ...