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Impact from a water drop causes an upward "rebound" jet surrounded by circular capillary waves.
Paani
ek
inorganic compound
hae, jiske
chemical formula
O hae. Paani jhillarr (transparent), besawaad, bina gandh ke, aur berang
chemical substance
hae. Ii
dunia
ke
hydrosphere
ke main constituent hae aur ii sab jinda chij me rahe hae. Kaaheki paani ek polar
molecule
hae, ii tagrraa intermolecular hydrogen bond banae hae, jon iske physical aur chemical properties ke khaas kaaran hae.
Ii sab rakam ke jiu khaatir jaruri hae, lekin ii khaana waala taagat nai de hae. Kaaheki ii sab jiu me hae, chemically stable hae, ii dunia bhar me paawa jaawe hae, iske tagrraa polarity hae, paani ke "universal solvent" bola jaawe hae.
Kaaheki dunia ke waatawaran, paani ke
triple point
ke nagiich hae, dunia me paani tiino solid, a liquid, aur gas ke ruup me rahe hae.
Paani se barsaat aur fog hoe hae. Baadal me paani aur ice ke chhota-chhota droplet rahe hae. Jab ice ke aur chhota karaa jaawe hae tab ii snow ban jaawe hae. Paani ke gas ke state bharf hae.
Paani, dunia ke 71.0% surface ke cover kare hae, aur samundar aur mahaasaagar me iske lagbhag 96.5%nvolume hae.
Thhorraa paani jamiin ke niche rahe hae (1.7%),
glaciers
aur
Antarctica
aur Greenland ke icecap (1.7%), hawaa me bharf ke ruup me , baadal , aur barsaat (0.001%).
Paani sab samay
water cycle
, jisme
evaporation
transpiration
evapotranspiration
),
condensation
precipitation
, aur runoff hae, me rahe hae.
Paani, dunia ke economy me ek khaas role play kare hae. Insaan ke kaam me laae waala paani ke 70% ke khet ke siche ke khaatir kaam me laawa jaawe hae.
Khaara paani aur mitthaa paani me machhri maarna dunia ke dher hissa me khaana ke ek important source hae, jisse dunia ke 6.5% of protein mile hae.
Jaada, tradeboat se, jon samundar, naddi, talaab aur khaarri me se jaawe hae, se karaa jaawe hae. Industry aur ghar ke garmaae aur thandaa kare ke khaatir dher paani ke kaam me laawa jaawe hae. Paani, dher chij ke khaatir solvent ke ruup me kaam me laawa jaawe hae, aur ii kaaran se iske dher industrial processes jaise khaana pakaana aur dhoe ke khaatir kaam me laawa jaawe hae. Paani, ice, aur snow ke dher khel-kuud, jaise pahurrnaa, nao chalaana,
boat racing
surfing
sport fishing
diving
ice skating
snowboarding
, aur
skiing
ke khaatir kaam me laawa jaawe hae.
Itihaas
badlo
source ke badlo
Dunia pe
badlo
source ke badlo
Ek chij jon jon ii anumaan lagae me ki dunia me kab pahile paani aais, ke hard kare hae ki paani ke sab time space se khiy dewa jaawe hae. Atmosphere me H
molecule
photosynthesis
se tuute hae aur jon
hydrogen
atom
bane hae kabhi-kabhi dunia ke gravitational pull se baaha rchal de hae. Jab dunia chhotaa rahaa aur kamtii garrhu rahaa tab paani ke space me aur sahaj se khoe dewa jaawat rahaa.
Halluk
element
jaise hydrogen aur
helium
ke expect karaa jaawe hae ki ii atmosphere se sab time leak karii, lekin aur garrhu
noble gases
jon atmosphere me hae ii suggest kare hae ki aur garrhu pahile ke elements in atmosphere me se space me herae jaaweat rahaa.
10
Xenon
khaas kar ke paani ke space me khoe ke calculation me important hae. Ii khaali ek nai hae noble gas (aur atmosphere se chemical reactions se nai nikaala jaawe hae ), lekin iske nau stable isotope ketna maatra me hae ke compare kar ke ii paawa jaawe hae ki dunia kamti-sekamti ek ocean bhar ke paani ke aapan puraana itihaas me khois hae. Ii jaada likely hae ki
Hadean
aur
Archean
eons ke biich me, koi cataclysmic events jaise
chandarma
ke bane ke impact, ketime bhais rahaa.
11
Dunia me koi bhi paani accretion ke duusra bhaag me
Moon-forming impact
(~4.5 billion years ago), jon likely Earth ke crust aur
upper mantle
ke vaporise kar dewa gaus rahaa hoi.
12
13
Ii patthar ke vapor dui hazaar saal me paani ban gae rahaa hoi, aapan pichhe garam volatileschhorr ke jiske kaaran jaada
carbon dioxide
waala atmosphere jisme hydrogen aur
bhaap
rahaa, banaa rahaa.. Baad me , liquid paani waala sagar rahaa hoi surface temperature of
230
°C (446
°F)
rahe par bhi jaada atmospheric pressure CO
atmosphere ke kaaran.
14
Jaise jaise dunia thandaa bhais jaada CO
atmosphere se
subduction
ke kaaran hatae dewa gais rahaa aur ocean ke paani me dissolve hoe e kaaran, lekin ii level uppar niche jaate rahaajaise nawaa new surface aur
mantle
suruu bhais.
15
This pillow basalt on the seafloor near Hawaii was formed when magma extruded underwater. Other, much older pillow basalt formations provide evidence for large bodies of water long ago in Earth's history.
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badlo
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Vibhag
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