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Chapter 3 Fresh Water Resources

Chapter 3 Fresh Water Resources

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Chapter 3 Fresh Water Resources

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  1. Chapter 3 Fresh Water Resources Section 1: Water to Drink

  2. Ch. 3 Water to Drink, Section 1 Learning Objectives: Water to Drink • Describe sources of drinking water and how it is treated and distributed. • Explain what happens to waste water

  3. 1. Water qualityThe degree of purity of water, determined by measuring the substances in water, besides water molecules.

  4. 2. pHHow acidic or basic a substance is, measured on a scale of 1 (very acidic) to 14 (very basic).

  5. 3. HardnessThe level of the minerals calcium and magnesium in water.

  6. 4. ConcentrationThe amount of one substance in a certain volume of another substance.

  7. Water Treatment Process • View before going over definitions: •

  8. 5. FiltrationThe process of passing water through a series of screens that allow the water through, but not larger solid particles.

  9. 6. FlocsSticky globs created by adding a chemical such as alum during water treatment.

  10. 7. CoagulationThe process by which particles in a liquid clump together; a step in the water treatment process.

  11. Pharmaceuticals in Drinking Water • • Fish Pharm •

  12. 8. SewageWater containing human wastes.

  13. Sewage Treatment Process •

  14. 9. SludgeDeposits of fine solids that settle out from wastewater during the treatment process.

  15. 10. Septic tankAn underground tank containing bacteria that treat wastewater as it passes through.

  16. 11. Leach fieldThe ground area around a septic tank through which wastewater filters after leaving the tank.

  17. Notes • 1. Our drinking water either comes from a ________________ or _____________ water supply. surface underground

  18. 2. Four sources of drinking water a. b. c. d. lakes rivers reservoirs aquifer

  19. acidity • 3. _________________________, _________________________, and _______________________are three factors that affect water quality. hardness Disease-causing organisms

  20. 6 • 4. On the pH scale ______ to ______ would be acidic, ______is neutral, and _____ to _____ is basic. 0 7 14 8

  21. potential Hydrogen • 5. pH stands for _________________________. • pH level refers to the amount of acid and alkaline contained inside of both the water and the growing medium or soil.  If the environment is too acidic, the plant will not attract enough hydrogen, while an environment that is too alkaline will attract too much hydrogen.   • An environment that continually fluctuates from one extreme on the pH scale to the other is unhealthy for the plant.

  22. hard • 6. __________ water contains high levels of _______________ and ______________. calcium magnesium

  23. 7. ____________________ is added to drinking water to __________________________. chlorine Kill disease causing micro-organisms

  24. Chapter 3 Fresh Water Section 2: Balancing Water Needs

  25. DroughtA water shortage caused by scarce rainfall in a particular area.

  26. 13. ConservationThe process of using a resource wisely so it will not be used up.

  27. 14. DesalinationThe process of obtaining fresh water from salt water by removing the salt.

  28. 1. A water shortage occurs when there is _______________water, or too great a _______________, or both. too little demand

  29. 2. Three major forms of water conservation by industries: • A. • B. • C. Reduce water Recycle water Reuse water

  30. 3. Two possible future sources of fresh water are___________________ and _________________. *Environmental questions with the ice berg: How would a huge mass of ice offshore affect the local weather? What would happen to the living things as the ice cooled around it? Salt water (desalination) icebergs

  31. Take shorter showers • 4. Five ways you can conserve water at home: • A. • B. • C. • D. • E. Scrub vegetables in a basin of water, not under running water Keep a pitcher of drinking water in the refrigerator instead of running the water till it gets cold Turn off the faucet instead of letting it run Only run the washing machine when you have a full load

  32. Chapter 3 Fresh Water Section 3: Freshwater Pollution Water: The basics of use, pollution, and our health in 5 minutes.

  33. 15. Water pollutionThe addition of any substance that has a negative effect on water or the living things that depend on the water.

  34. 16. Point sourceA specific source of pollution that can be identified, such as a pipe.

  35. 17. Nonpoint sourceA widely spread source of pollution that is difficult to link to a specific point of origin, such as road runoff.

  36. 18. Acid rainRain that is more acidic than normal, caused by the release of molecules of sulfur dioxide and nitrogen oxide into the air.

  37. 19. PesticideA chemical intended to kill insects and other organisms that damage crops.

  38. 1. Four major sources of water pollution are: • A. • B. • C. • D. Human wastes Industrial wastes Agricultural chemicals Runoff from roads

  39. Cholera • 2. _______________________ is caused by ________________waste. bacteria in human

  40. 3. Three types of industrial pollutants: • A. • B. • C. Chemicals Smoke and exhaust Heat pollution

  41. 4. __________________rain is caused by the _________________and ____________released by smokestacks and ___________exhaust. Acid Sulfur dioxide Nitrogen oxide car, truck, bus

  42. 5. The rich supply of nutrients from _____________________encourages the growth of ________________and algae in nearby bodies of water. fertilizers plants

  43. What can you do? • See Dr. Eddie Widder is doing-Making Water Pollution Visible: •

  44. Chapter 3 Fresh Water Section 4: Water as an Energy Resource

  45. 20. Kinetic energyThe form of energy that an object has when it is moving.

  46. 21. Potential energyEnergy that is stored and waiting to be used.

  47. 22. Hydroelectric powerElectricity produced by the kinetic energy of water moving over a waterfall or dam.

  48. Kinetic energy-form of energy an object has when it is moving • 1. Four types of Energy in a Hydroelectric Power Plant • A. • B. • C. • D. • Hydroelectric power: • Pg. 107 in text Potential energy-energy stored and waiting to be used Hydroelectric power-electricity produced by the kinetic energy of water moving over a waterfall or a dam. Electrical energy

  49. Flooding the land can destroy wildlife habitats as well as farms and towns • 2. Three negative impacts a dam can have on an area • A. • B. • C. organisms can not survive the change of once fast moving waters becoming still The dam is a barrier across the river and it may prevent fish from traveling to the parts of a river where they usually lay their eggs and young fish are hatched.

  50. Three positive impacts a dam can have on an area • A. • B. • C. Water power is the least expensive Water is the least polluting large scale energy source Dams can supply water for irrigation and help in flood control