1. Warm-Up
What do you do when you’re thirsty and you want some water? Is this the same for everyone around the world?
2) Do you think that the majority of the Earth contains usable water? Explain why or why not.

2. All the Water in the World
How much of this represents all the freshwater in the world?
How much of this is frozen and inaccessible to humans?
How much of this can plants, animals, and humans use?
All the Water in the World
All the water in the world
All the FRESH water in the world (3%)
All the FRESH water in the world that is not frozen in glaciers or icecaps
All the FRESH water in the world that is available for humans and plants to use

3. Less than 1% of Earth’s water supply
is ready for human use

4. CYCLES What is a cycle? A cycle is a repeating event or process
What are some cycles in our lives?
What cycles have we learned about this semester?

5. What are the different places water can go as it moves through and around the Earth?

7. What is the WATER CYCLE?
Water constantly moves among the oceans, the atmosphere, the solid Earth, and the biosphere. This unending circulation of Earth’s water supply is the water cycle.

8. The Water Cycle The continuous circulation of Earth’s water supply.
Water moves among the oceans, atmosphere, solid Earth and the biosphere
The energy source for the water cycle comes from the sun

9. The Water Cycle
WC is balanced meaning that the average annual precipitation over Earth EQUALS the amount of water that evaporates. (What goes up comes down)
Evaporation exceeds precipitation over water and precipitation exceeds evaporation over land

10. Vocab find!!
Use the textbook to find the definition of your assigned words. 10

11. Vocabulary Words Evaporation Condensation Transpiration Sublimation
Infiltration
Runoff
Precipitation

13. 1 3 6 2 5 4 7

14. How does surface effect the water cycle?
How will water act differently in the ball field and in the parking lot??? 14

15. WATER CYCLE BALANCE
How does the law of conservation of matter relate to the water cycle?
Water is never created or destroyed. It just cycles through different forms in what we call the water cycle.

16. WATER CYCLE BALANCE
Because water is never created or destroyed, the water cycle is balanced.
Balance in the water
cycle means that the
average annual precipitation
over Earth equals the
amount of water that
evaporates

17. WATER CYCLE BALANCE There are local imbalances
Ex: over the ocean, more water evaporates than precipitates
Ex: over land, more water precipitates than evaporates

18. ? 60

19. FAST FACT
The average person in the United States uses anywhere from gallons of water per day. Flushing the toilet actually takes up the largest amount of this water.

20. Circle the events where water moves WITH gravity:
Infiltration
Precipitation
Runoff
Evaporation
Transpiration
Circle the events where water moves AGAINST gravity:

21. Water Cycle Rap http://www.youtube.com/watch?v=F9Yi4dAzHsc
Quietly listen to rap and fill in your lyrics as we go

22. Homework Draw your version of the water cycle.
Label and define all steps in the process

23. EXIT TICKET
___1. Which of the following processes in the water cycle goes against gravity?
a. Infiltration c. Run-off
b. Evaporation d. Erosion
___2. Which of the following water cycle processes is most likely to occur on a steep slope?
___3.  Where is the 3% of Earth’s freshwater found?
a. Oceans c. Glaciers
b. Lakes d. Clouds
 ___4. Where is 97% of Earth’s water
located?
___5. What process is represented
by letter C on the diagram?
b. Transpiration d. Erosion
The diagram to the right is a cross sectional view of
rainwater through zone A? (4.04)
Runoff
Saturation
Infiltration
Precipitation