1. Chapter 14 – Water Resources Where does your drinking water come from?

7. 2. Draw a simple diagram of the water cycle and label the 3 main processes.

18. 2. Groundwater may leave the aquifer and become surface water at the “ zone of discharge ”, may pump out on its own (when under pressure) through an “ artesian well ”, or may be accessed by drilling wells

19. Artesian Well

21. Review Questions 1. What is a watershed? How does water get from a watershed to a river? The land area from which water drains into rivers and streams.

22. 2. Describe how groundwater forms. Water moves down through the ground through permeable layers of rock until it hits an impermeable layer.

23. 3. What causes the differences in the depth of the water table? Precipitation Drought Overuse

24. 4. Name 2 ways that we may obtain water from an aquifer. Drilling wells or artesian wells.

30. 2. Make a list of all of the ways that you have used water so far today. Don’t forget to include industrial and agricultural uses!

32. Ogallalla Aquifer

36. Extinct woodpecker because of habitat loss

37. 2. Damages or destroys habitat of aquatic organisms such as fish, amphibians, and invertebrates, as well as migratory birds

40. 2. Why do humans change stream courses, build dams and reservoirs, and drain wetlands? The main reason is to develop the land.

41. 3. What do humans need to do in order to solve some of our water resource problems? Make water conservation a priority.

44. Distillation

45. c. Freezing – salt water is frozen and separates, forming an ice and brine slush; ice can be melted to obtain fresh water

48. c. Filtration – water is passed through a filtering material such as fine sand to remove smaller particles

50. ii. bacteria enter the water and break down organic matter and oxygen is mixed in; this process improves the smell and taste of the water

51. e. Sterilization – water is exposed to extreme heat or chemicals such as chlorine in order to remove harmful bacteria and microorganisms

54. 2. What does “unpotable” mean? It means that it is unsafe to drink.