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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