1. The Earth’s Water Cycle
Unit 2 – The Physical World

2. Spiral Entry:
What drives the Earth’s water cycle?

3. The Cycle
Sun
Evaporation
Condensation
Precipitation

5. Where does all of the water end up?
Eventually (may take thousands of years) all water ends up in the oceans

6. Come up with a story for a rain drop **Memorize it
Name of your rain drop
Where it started (specific location)
All the steps to through the cycle
Where you end up (specific location)

7. Salty Water 97%!! About how much of the Earth’s water is salt water?
The Growing population on earth has caused many governments / scientists to try and figure out desalination

8. Salty Water Talk to a partner about what this
guy’s opinion on desalination is
Salty Water
“Desalination is a promise fulfilled. Today, hundreds of million people around the world have access to clean water thanks to desalination. Just as importantly, desalination is also a promise for the future, with its unique ability to deliver a reliable, sustainable and new source of water to our thirsty planet.”
— Corrado Sommariva, invitation to the International Desalination Association 2013 World Congress

9. Which locations probably need a desalination plant?

10. Desalination Video
You should be able to tell me / write about the Desalination process after this video

11. Climate and Weather.
The Physical World

12. Weather vs. Climate Weather – The daily condition of the atmosphere
Includes temperature and precipitation
Climate – Weather measured over a long period of time (usually 30 years)
The page on the right belonged to Thomas Jefferson. He logged the weather every day for more than 50 years.

13. Climate vs. Weather Weather – The daily condition of the atmosphere
Includes temperature and precipitation
Climate – Weather measured over a long period of time (usually 30 years)

14. Climate Zones Polar Zone Cool summers, Cold winters Temperate Zone
Mild summers, Mild winters
Warm summers, Warm winters
Tropical Zone
Quiz students on which climate zones are which. Have them label the characteristics of each climate zone on their maps from last class.
Mild summers, Mild winters
Temperate Zone
Cool summers, Cold winters
Polar Zone

15. Biomes Temperature Precipitation BIOME
Play the Bill Nye video and have the kids describe a desert and a tropical rainforest. What
BIOME

16. Biomes: Four Main Categories
Forests
Grasslands
Deserts
Tundra

17. Biomes – Page 71 Describe the following biomes in your spiral:
Desert
Tundra
Temperate Forest
Tropical Rainforest
What factors determine a biome?
As you watch the video, write about the different biomes that are talked about.
Play the Bill Nye video and have the kids describe a desert, tropical rainforest, and tundra. Temperature and precipitation determine a biome.

18. Distribution of Biomes
Temperature and precipitation determine the distribution of the world’s biomes.
Left:
Have the students list off patterns that they see with the distribution of biomes. Write them in their notes. They won’t really see a pattern for desert yet. But they will after controls on climate lesson.

19. Understanding Climate Graphs
A combination of line and bar graph used to compare the temperature and precipitation of a location.

20. All Climate Graphs…
…plot temperature and precipitation (the two components of climate)
…mark the months of the year at the bottom and precipitation/ temperature on the sides
…use a bar graph for precipitation and a line graph for temperature

21. High steady temps all year = close to the equator
Temps stay stable near the coast
High precipitation = near warm ocean currents or the tropics
Low precipitation = Desert or leeward side of mountain
If a temperature line is low and steady it is probably higher latitude, but along a coast line. High and steady is most likely along the equator.

22. If line bows up = Northern Hemisphere
Have students guess what hemisphere each city is in. First – Northern (the temp line makes a hill). Second – Southern (Temp makes a valley). Last – Northern (Curves up and makes a small hill).
First two are in the middle of a continent (huge difference in temperature between summer and winter). Last one is near the equator (high temperatures and not much change)

23. If line bows down = Southern Hemis.
Have students guess what hemisphere each city is in. First – Northern (the temp line makes a hill). Second – Southern (Temp makes a valley). Last – Northern (Curves up and makes a small hill).
First two are in the middle of a continent (huge difference in temperature between summer and winter). Last one is near the equator (high temperatures and not much change)

24. Dramatic shifts in temp. through year = In the interior of a continent
Have students guess what hemisphere each city is in. First – Northern (the temp line makes a hill). Second – Southern (Temp makes a valley). Last – Northern (Curves up and makes a small hill).
First two are in the middle of a continent (huge difference in temperature between summer and winter). Last one is near the equator (high temperatures and not much change)

25. In what hemisphere is this located? How can you tell?
North = the line bows up

26. In what hemisphere is this located? How can you tell?
South = the line bows down

27. Practice on your blank climate graph
Complete your blank climate graph using the information above. Choose from the following locations to determine where in the world it is located
Santiago, Chile
Goodland, Kansas
Lima, Peru
San Diego, California
Upernavik, Greenland
Manaus, Brazil
Answer: Goodland, Kansas. Northern Hemisphere (eliminate southern hemisphere choices), Greenland too far north (and cold), Dramatic shifts in temperature from winter to summer mean the location is in the middle of a continent.
Have the students write a paragraph on the back of their climate graph explaining why the location is Kansas.
There is another climate graph for them to do at the beginning of the controls on climate powerpoint if there is extra time left.