1. “Water, water everywhere
H2O = Life
H2O = Life
Chapter 15
“Water, water everywhere
nor any drop to drink…”
~ Samuel Taylor Coleridge 1798
Mr. Sierra's
Earth Science

2. Earth – the “Blue Planet”
If 70% of our planet is covered with water, why should we be concerned about “saving” any?

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

4. Vocabulary Desalination
- the process of removing salt from ocean water

6. March 22 Every Year!

7. same glass as half-full. But a giving person and starts looking for
"A pessimist, they say,
sees a glass of water
as being half-empty;
an optimist sees the
same glass as half-full.
But a giving person
and starts looking for
someone who might
be thirsty."
Communications Consultant,
G. Donald Gale

8. In America… What do we use water for? What uses the most water?
On average, each person in the United States uses about 20,000 gallons of water each year.
What do we use water for?
Water is used for bathing, washing clothes and dishes, watering lawns, carrying away wastes, and drinking.
What uses the most water?
Farming & Agriculture

10. What is the driving force
Hint…
What is the driving force
(source of energy)
for the water cycle?

11. Vocabulary
Watershed
- the area of land that is drained by a river system

13. United States Watershed

15. VOCABULARY
Aqueduct:
a man-made river, canal or pipeline for transporting water
The Pont du Gard aqueduct was constructed by the Romans in the 1st century AD

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

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

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

19. Additional Vocabulary
Gradient
Velocity
Tributary
Capacity