Week 4 Answer

Name: Silvester Pollard

Week 4 Chapter Questions Answer Sheet

(Please type your answer under each question)

Chapter 10

Practice Quiz

Question 1: Describe the path a molecule of water might follow through the hydrologic cycle from the ocean to land and back again. Water evaporates from moist surfaces, falls as rain or snow, passes through living organisms, and returns to the ocean

Question 5: Describe at least one example of the environmental costs of water diversion from rivers to farms or cities. Dams are justified in terms of flood control, water storage, and electricity production. However, the costs of relocating villages, as well as lost fishing, farming, and water losses to evaporation are enormous.

Question 6: Explain the difference between point and nonpoint pollution. Factories, power plants, sewage treatment plants, underground coal mines, and oil wells are classified as point sources because they discharge pollution from specific locations, such as drain pipes, ditches, or sewer outfalls nonpoint sources of water pollution are diffuse, having no specific location where they discharge into a particular body of water. Which is harder to control? Nonpoint sources. Why? They are much harder to monitor and regulate than point sources because their origins are hard to identify.

Critical Thinking and Discussion Questions

Question 1: What changes might occur in the hydrologic cycle if our climate were to warm or cool significantly? Warmer air can hold more water vapor, thereby generating increased evaporation rates. Drier air can accept much more water vapor than air that is nearly saturated the warming will reduce the extent of sea ice , thereby allowing more evaporation from open water and, a significant decrease in rainfall. On the other hand cooler air will accept more water and generate more precipitation

Question 6: Under what conditions might sediment in water or cultural eutrophication be beneficial? Increased productivity in an...