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 Why is Dam-building such a controversial issue?.

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Presentation on theme: " Why is Dam-building such a controversial issue?."— Presentation transcript:

1  Why is Dam-building such a controversial issue?

2 Water Wars in the Middle East  Nile River  Jordan basin  Tigris & Euphrates

3 Water Wars in the Middle East  orum/water/html/river_nile.stm orum/water/html/river_nile.stm

4 Define in your own words…  Water Table  Aquifer  Recharge  Watershed

5 Three Gorges Dam-China

6 Three Gorges Dam 

7 Three Gorges Dam-China, 2009

8  How does non-point source contamination differ from point source contamination?

9 Point source vs. non- Point source contamination Define Point-sourceDefine non-Point-source Examples of Point- source Examples of non-Point source

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11 The Jerome Retention Basin

12  Provide examples of non- point source and point source contamination in your neighborhood, and describe how they differ.

13  How are farms related to the algae growth in your neighborhood ponds?

14 Phosphate concentrations in the Jerome Retention Basin

15 Predict where the phosphate concentrations will be highest and lowest.

16  Fertilizer Run-off: Nitrates & Phosphates

17 Algae Blooms In Lake Erie over the summer

18 0.0 ppm2.0 ppm Phosphate concentrations in the Jerome Retention Basin ??? Color code your map according to the scale below.

19  Write a conclusion about plants and phosphate levels that you can draw from your map, and provide supporting evidence.

20  How are farms related to the algae growth in your neighborhood ponds?

21  Why is Eutrophication so dangerous?

22  Why is Hypoxia so dangerous?

23

24 Define the following:

25 Eutrophication  Step 1: Step 2: Step 3: Description Step 1Step 2Step 3 (sketch)

26  Explain how the following affect one another. (not just definitions)

27  What were the results of the Cuyahoga River Fire of 1969?

28 The Cuyahoga River FIRE!  Where?  When?  Why?  What were the results?  How have you been impacted?

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30 The Cuyahoga River

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32 The Cuyahoga River FIRE!

33 The Clean Water Act  When?  Why?  What were the results?  How have you been impacted?

34 The Clean Water Act

35  What were some of the results of the Clean Water Act of 1972?

36  How does humidity change in regards to temperature?

37  Describe how porosity, permeability, and particle size relate to polluting your aquifer

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39  How do porosity, permeability, and particle size relate to polluting your aquifer?

40  Why does condensation forms on the outside of a cold water bottle?

41

42  What are some of the greatest challenges associated with our water supply? EnvironSci book p

43 What are some of the greatest challenges associated with our water supply?  Access to Groundwater (Aquifers are recharged by Surface water)  Transpiration (Cottonwood & Willow trees suck up and evaporate water)  Competition for Use of water supply (agriculture, drinking water, septic system)  Agriculture Nitrates & Phosphorous (from fertilizers)  Urbanization (population growth in cities draws more groundwater)

44  Use a diagram to show the important role that Aquifers play in our water supply Where does the majority of YOUR drinking water come from?

45  Where is the majority of the freshwater on earth found?

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47 Where is your drinking water?

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49 Icebergs: Freshwater or Saltwater?

50 When WATER becomes as valuable as OIL, where would you live? And why?

51  Where are the biggest reservoirs of freshwater on Earth?

52  What causes precipitation to occur?

53 Explain what happened in the bottle.  Demo 1: “Cloud in a bottle” demo (with bicycle tire pump)  Demo 2: “Cloud in a bottle” demo (match cloud seeding)

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55 What process is this?

56 What patterns can you identify? What factors do you think influences these precipitation patterns

57 Where would you place your Farm-ville?

58  Describe one method that may help us obtain more drinking water

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64 Topography (terrain) Rain

65 Rain Shadow Effect  Study the Hawaiian Island terrain maps with your group.Hawaiian Island terrain maps   Then study the Avg Precipitation maps over the islands.  Q. What patterns can you identify in regards to precipitation and terrain?

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67 Rain Shadow Effect

68  What is humidity?

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70 What patterns can you identify?

71 The Gulf Stream

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73  What solutions do scientists think may solve our shortage of drinking water?

74 Cloud Seeding

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76 What process is this?

77 Transpiration

78 What is happening in this picture? Why would someone attempt to do this?

79  Describe one solution scientists think may solve our shortage of potable water

80  What are the problems associated with privatizing potable water?

81 Blue Gold

82  What are some sustainable practices that you can adopt to save our potable water?

83  What are the issues that arise when we interfere with the movement of our groundwater?

84  What are the effects of El Nino?

85 El Nino  Where does the name “El Nino” come from?

86 Normal Pacific Ocean Currents But every years…

87 El Nino Pacific Ocean Currents

88  Is this a normal year? …or an El Nino year

89 Indonesia Normal rain South America Normal rain

90 Indonesia Drought! South America INTENSE Rain!

91 Ocean Nutrient upwelling In terms of Nutrients, what does Ocean upwelling do off the coast of South America?

92 Ocean Nutrient upwelling How does an El Nino year affect Nutrient cycling in off the coast of South America?

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94 Normal El Nino La Nina

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97 How do we collect this data?

98 What does normal climate look like around the Pacific? Purple = precipitation Red = surface temperature Blue = nutrient Upwelling

99 What does climate look like during an El Nino year? Purple = precipitation Red = surface temperature Blue = nutrient Upwelling

100  How does El Nino affect precipitation patterns, ocean temperatures, and nutrient upwelling?

101  How does El Nino differ from La Nina?

102

103 What does climate look like during a La Nina year? Purple = precipitation Red = surface temperature Blue = nutrient Upwelling

104  How does a La Nina year affect farmers in South America and Indonesia?


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