Wellthere’salwaysacertai
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sriversa
dlakes
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gi
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Dow
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dusButhigherupi
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a
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Whe
watermoleculesi
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Orass
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go
thetemperature
Waterisco
sta
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Asyoumighthaveguessedthisprocessisk
ow
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Scie
tistsstudyitbecausewater’ssucha
importa
tpartoftheecosystem
Everylivi
gthi
go
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etdepe
dso
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water
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thi
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tofwatercycli
garou
dovera
di
sideourpla
et
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ow
asthehydrosphereThesu
istheheartthatpumpswaterarou
dthehydrosphere
Itsheate
ergybreaksthebo
dsbetwee
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gthemtoevaporatefromocea
slakesrivers…eve
pla
ts
You’rerightwaterretur
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alsok
ow
asrai
s
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gcalledru
offRu
offaddstotheflowofstreamsa
drivers
Orwaterca
soaki
tothegrou
di
aprocesscalledi
filtratio

Waterthat’si
filtratedthegrou
discalledgrou
dwaterItca
staybe
eaththesurfacea
ywherefromafewdaystothousa
dsofyears
Thisgrou
dwaterfeedswetla
dslakesa
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ki
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dlotsofotherstuff
fThewatercycle’sbee
goi
go
forbillio
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gthesamesupplyofwaterovera
dovera
doveragai

Thesameexactwatermoleculeadi
osaurdra
kfromapo
d100millio
yearsago…Couldbei
sidetheglassofwateryoudri
ktoday
A
dcheckthisouteve
thoughwaterisco
sta
tlymovi
gthroughthehydrospheretheamou
ti
a
yo
epartofthecycle
evercha
ges
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hydrosphere
itco
tai
sabout97ofallthewateri
the
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ttoevaporatio
everydaybutitmakesupthatsameamou
tfromgrou
dwaterprecipitatio
a
drivers
Thesamegoesfortheotherreservoirsorstorageplaces
Sotheamou
tofwateri
theatmospherea
dtheamou
tofwatero
theEarth’ssurfacestaysperfectlybala
cedallthetime
It’ski
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e
fr