bhooparpati

budh grah ki aatanrik sanrachana - '1' dvaara naamaankit sabse baahari parat parpati (krast) hai

bhooparpati ya krast (angreji: crust) bhoovijnyaaan mein kisi pathareele grah ya praakrutik upagrah ki sabse oopar ki thos parat ko kehte hain. yeh jis saamagri ka bana hota hai vah iske neeche ki bhoopraavaar (maintal) kahalaai jaane waali parat se rasaayanik taur par bhinn hoti hai. hamaare sauramandal mein pruthvi, shukr, budh, mangal, chandrama, aayo aur kuchh anya khagoleeya pindon ke bhoopatal jyaadaatar jvaalaamukheeya prakriyaaon mein bane hain (yaani andar se ugale gaye hain).[1] antariksh se dekhne par pruthvi lagbhag golaakaar geind ki bhaaainti dikhaai deti hai. is golaakaar pruthvi ki parpati ki santare ke chhilke se tulana ki ja sakti hai. motaai ke aadhaar par yeh sabse patali parat hai aur iski ausat motaai lagbhag 33 ki॰ mee॰ maani jaati hai. bhooparpati halki chattaanon se bani hai jismein silika aur aakseejan ki pradhaanata hai.

raasaayanik sangathan

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 ...