HH22O = LifeO = LifeHH22O = LifeO = Life

““Water, water everywhereWater, water everywhere nor any drop to drink…” nor any drop to drink…”

~ Samuel Taylor Coleridge 1798~ Samuel Taylor Coleridge 1798

Chapter 15Chapter 15

Earth – the “Blue Planet”Earth – the “Blue Planet”

If 70% of our planet If 70% of our planet is covered with is covered with water, why should water, why should we be concerned we be concerned about “saving” any? about “saving” any?

Earth – the “Blue Planet”Earth – the “Blue Planet”

It’s mostly SALT It’s mostly SALT water - only about water - only about 1-3 % is actually 1-3 % is actually fresh, drinkable and fresh, drinkable and “accessible”. “accessible”.

VocabularyVocabularyDesalinationDesalination- the process of removing salt from ocean water- the process of removing salt from ocean water

http://maps.grida.no/library/files/water-desalination_002.jpg

http://www.good.is/post/transparency-drinking-water/

March 22 Every Year!March 22 Every Year!

"A "A pessimistpessimist, they say,, they say,sees a glass of watersees a glass of wateras being half-empty;as being half-empty;an an optimistoptimist sees the sees thesame glass as half-full.same glass as half-full.But a But a givinggiving person personsees a glass of watersees a glass of waterand starts looking forand starts looking forsomeone who mightsomeone who mightbe thirsty."be thirsty."

Communications Consultant, Communications Consultant,

G. Donald GaleG. Donald Gale

In America…In America…

• On average, each person in the United On average, each person in the United States uses about States uses about 20,000 gallons20,000 gallons of water of water each year. each year.

What do we use water for?What do we use water for?• Water is used for bathing, washing clothes Water is used for bathing, washing clothes

and dishes, watering lawns, carrying away and dishes, watering lawns, carrying away wastes, and drinking.wastes, and drinking.

What uses the most water?What uses the most water?• Farming & AgricultureFarming & Agriculture

What is the driving force

(source of energy)

for the water cycle?

Hint…

VocabularyVocabulary

WatershedWatershed- the area of land that is drained by a river system

http://www.raritanbasin.org/Pictures/watershed.jpg

United States WatershedUnited States Watershed

http://www.nps.gov/miss/photosmultimedia/upload/watershedBG.jpg

http://chanceofrain.com

/wp-content/uploads/2009/09/B

ay_Delta_M

ap4.gif

VOCABULARYVOCABULARY

Aqueduct: Aqueduct: a man-made river, a man-made river,

canal or pipeline for canal or pipeline for transporting watertransporting water

The Pont du Gard aqueduct was constructed by the Romans in the 1st century AD

VOCABULARYVOCABULARYLevee:Levee:Raised earth (like a dam) that runs parallel to a Raised earth (like a dam) that runs parallel to a river river – used to control rivers and prevent flooding.– used to control rivers and prevent flooding.

VOCABULARYVOCABULARY

Reservoir:Reservoir:An artificial (man-made) lake, made by a dam, used An artificial (man-made) lake, made by a dam, used to store water.to store water.

California WaterwaysCalifornia WaterwaysActivity:Activity:Follow instructions Follow instructions on worksheet to on worksheet to identify key rivers, identify key rivers, aqueducts and aqueducts and reservoirs in our reservoirs in our state. Be sure to use state. Be sure to use your KEY to identify your KEY to identify colors.colors.

Additional VocabularyAdditional Vocabulary

• GradientGradient• VelocityVelocity• TributaryTributary• CapacityCapacity