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THE WATER THE WATER CYCLECYCLEANDAND
WATER TYPESWATER TYPESGeography / Chapter 2Geography / Chapter 2
77thth Red Team- DTurner Red Team- DTurner
WATER FORMSWater exists in three formsWater exists in three forms
Liquid, Frozen, VaporLiquid, Frozen, Vapor
Liquid- rivers, lakes, oceansLiquid- rivers, lakes, oceans
Frozen- glaciers, ice sheetsFrozen- glaciers, ice sheets
VaporVapor- water in gas form- water in gas form
WATER
The amount of water on earth does not The amount of water on earth does not changechange
Water is constantly moving– from Water is constantly moving– from oceans, to air, to the ground and back oceans, to air, to the ground and back to the oceansto the oceans
This is the This is the water cyclewater cycle
EVAPORATIONThe sun drives the water cycleThe sun drives the water cycle
The sun evaporates water from-The sun evaporates water from-
Oceans, lakes, rivers, streamsOceans, lakes, rivers, streams
EvaporationEvaporation- changing water to vapor- changing water to vapor
The amount of water vapor the air holds The amount of water vapor the air holds depends on air temperaturedepends on air temperature
Warm air holds more water vaporWarm air holds more water vapor
CONDENSATION
Warm air rises and cools at higher Warm air rises and cools at higher elevationselevations
As water vapor cools it condensesAs water vapor cools it condenses
CondensationCondensation is water vapor changing is water vapor changing to liquid formto liquid form
PRECIPITATIONTiny droplets of water form cloudsTiny droplets of water form clouds
Droplets become heavier than air and Droplets become heavier than air and fall in the form of precipitationfall in the form of precipitation
Air temperature determines formAir temperature determines form
Forms of Forms of precipitationprecipitation
Rain, snow, sleet, hailRain, snow, sleet, hail
WATER CYCLE CONTINUES
Some precipitation soaks into the Some precipitation soaks into the ground and collects in streams, rivers, ground and collects in streams, rivers, and lakesand lakes
SurfaceSurface runoffrunoff, ground water and rivers , ground water and rivers return water to the oceansreturn water to the oceans
Soon, evaporation occurs and the cycle Soon, evaporation occurs and the cycle repeatsrepeats
THINK ABOUT ITIt’s a hot day.It’s a hot day.
You go to get a You go to get a drink of water, but drink of water, but nothing comes out nothing comes out of the faucet.of the faucet.
What do you do?What do you do?
How important is How important is water to us?water to us?
In a single day how In a single day how do we use water?do we use water?
TYPES OF WATERSurface waterSurface water can be- can be-
FreshwaterFreshwater
SaltwaterSaltwater
Freshwater is most important to humansFreshwater is most important to humans
FRESHWATEROnly 3% of water Only 3% of water is freshwateris freshwater
Of that, 2% is in Of that, 2% is in frozen formfrozen form
GlaciersGlaciers
Ice SheetsIce Sheets
Glaciers, lakes Glaciers, lakes and rivers are and rivers are freshwaterfreshwater
GROUND WATERGround water is freshwaterGround water is freshwater
It fills tiny cracks and holes in rock It fills tiny cracks and holes in rock layerslayers
Large underground reservoirs are Large underground reservoirs are aquifersaquifers and its water flows and its water flows
SALT WATEROceans contain salt waterOceans contain salt water
The oceans make up 97% of all waterThe oceans make up 97% of all water
We can sail from ocean to ocean We can sail from ocean to ocean without touching landwithout touching land
FOUR MAJOR OCEANS
Atlantic OceanAtlantic Ocean
Pacific OceanPacific Ocean
Indian OceanIndian Ocean
Arctic OceanArctic Ocean
Be able to name Be able to name themthem
Be able to locate Be able to locate themthem
FACTS
Pacific OceanPacific Ocean
Largest and Largest and deepestdeepest
64 million square 64 million square milesmiles
Mt. Everest would Mt. Everest would sinksink
Salt WaterSalt Water
SeasSeas GulfsGulfs BaysBays StraitsStraits
VOCABULARY REVIEW
Water VaporWater Vapor
Water CycleWater Cycle
EvaporationEvaporation
CondensationCondensation
PrecipitationPrecipitation
GroundwaterGroundwater
Surface waterSurface water
AquiferAquifer
Forms of Forms of PrecipitationPrecipitation
FreshwaterFreshwater
Salt WaterSalt Water
Run OffRun Off
GlacierGlacier
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