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Chapter 13 Review

Chapter 13 Review. Water Cycle. 3% freshwater, but .003% drinkable (glaciers) Transpiration vs. Evaporation Surface Runoff OR Percolation (underground). Aquifers and Water Uses. Rain  Percolation  Porous Rocks  Aquifer Aquifer gets new water = natural recharge Water mining (like oil)

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Chapter 13 Review

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  1. Chapter 13 Review

  2. Water Cycle • 3% freshwater, but .003% drinkable (glaciers) • Transpiration vs. Evaporation • Surface Runoff OR Percolation (underground)

  3. Aquifers and Water Uses • Rain  Percolation  Porous Rocks  Aquifer • Aquifer gets new water = natural recharge • Water mining (like oil) • Too much water mining = over-drafting • Uses: Domestic (drinking), Agricultural (farms) and Industrial (factories) • Developed = industrial, Developing = agricultural

  4. Dams and Water Treatment • Dams = block water flow (heart attack) • Chlorination, Sedimentation, Desalinization • Salt water  Fresh water (expensive) • Reclaimed water = recycled water (cheap, nutrient-rich)

  5. For Your Math Problems… • Include: • To get m3: multiply rainfall by area of facility • Include percentages on ARROWS Recharged in Aquifer Irrigated in Soil Amount of Rainfall (in m) Pre-Treatment Facility (include area in m2) Treatment (include cost in $/m3)

  6. Water Quality • Turbidity (clarity), temp, pH, dissolved oxygen • Pollutants from one source (point) or mulitple (non-point) • Pesticides and biomagnification (food chain) • Lakes and eutrophication (too many nutrients)

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