Question Set on Oceans and Freshwater Ecosystems
Unit 6 Water – Assignment is due on Friday, March 27th by the start of class.
Vocabulary
Chapter 15 aquifer artesian aquifer confined aquifer consumptive use desalination floodplain nonconsumptive use nonpoint source point source primary treatment reservoir runoff secondary treatment septic systems sinkholes surface water unconfined aquifer wastewater watershed water table
Chapter 16 benthic by-catch continental shelves downwelling El Nino Southern Oscillation estuaries harmful algal blooms intertidal La Nina littoral ocean acidification pelagic photic zone red tides thermohaline circulation upwelling Questions
Chapter 15
1. Compare and contrast the main types of freshwater ecosystems. Name and describe the major zones of a typical pond or lake. All freshwater systems are relatively pure and have few dissolved salts. Types of freshwater systems include surface water, rivers, streams, lakes, ponds, wetlands, and groundwater. All of the systems are located on and in different parts of the earth. They are all in the 3% of freshwater systems on earth. The zones of a lake are the littoral zone, the limnetic zone, the profundal zone, and the benthic zone.
2. Describe three benefits and three costs of damming rivers. What particular environmental, health, and social concerns has China’s Three Gorges Dam and its reservoir raised? Benefits include preventing floods, providing drinking water, and facilitating irrigation. Costs of dams include expenses, slowing of river flows, and erosion of tidal marshes. Many people were displaced from their homes, tidal marshes eroded, and many pollutants were trapped in the reservoir.
3. Why do the Colorado, Rio Grande, Nile, and Yellow Rivers now slow to a trickle or run dry before reaching their deltas? It is a result of our diversions and our consumption. We are withdrawing surface water at an unsustainable rate.
4. Name three major types of water pollutants, and provide an example of each. List three properties of water
Vocabulary
Chapter 15 aquifer artesian aquifer confined aquifer consumptive use desalination floodplain nonconsumptive use nonpoint source point source primary treatment reservoir runoff secondary treatment septic systems sinkholes surface water unconfined aquifer wastewater watershed water table
Chapter 16 benthic by-catch continental shelves downwelling El Nino Southern Oscillation estuaries harmful algal blooms intertidal La Nina littoral ocean acidification pelagic photic zone red tides thermohaline circulation upwelling Questions
Chapter 15
1. Compare and contrast the main types of freshwater ecosystems. Name and describe the major zones of a typical pond or lake. All freshwater systems are relatively pure and have few dissolved salts. Types of freshwater systems include surface water, rivers, streams, lakes, ponds, wetlands, and groundwater. All of the systems are located on and in different parts of the earth. They are all in the 3% of freshwater systems on earth. The zones of a lake are the littoral zone, the limnetic zone, the profundal zone, and the benthic zone.
2. Describe three benefits and three costs of damming rivers. What particular environmental, health, and social concerns has China’s Three Gorges Dam and its reservoir raised? Benefits include preventing floods, providing drinking water, and facilitating irrigation. Costs of dams include expenses, slowing of river flows, and erosion of tidal marshes. Many people were displaced from their homes, tidal marshes eroded, and many pollutants were trapped in the reservoir.
3. Why do the Colorado, Rio Grande, Nile, and Yellow Rivers now slow to a trickle or run dry before reaching their deltas? It is a result of our diversions and our consumption. We are withdrawing surface water at an unsustainable rate.
4. Name three major types of water pollutants, and provide an example of each. List three properties of water