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Water Cycle Unit Study Guide Name Date 1. Describe the Carbon-Oxygen Cycle. Pd 2. How is nitrogen made useable by plants and animals in the Nitrogen Cycle? 3. Explain how minerals in rocks are used by plants. 4. Draw the water cycle, label at least 5 parts. 5. Match the definition to the following terms Precipitation ______ Infiltration ______ Condensation ______ Transpiration ______ Evaporation ______ a. process where liquid water from oceans, lakes, etc becomes a gas b. loss of water from the leaves of plants into the atmosphere c. as air cools, water vapor collects into tiny droplets that form clouds d. moisture (rain, snow, sleet, or hail) falling from the atmosphere e. process of water soaking into the soil 6. What is runoff? 7. Name 4 sources of the Earth’s water. 8. What source of water is mostly unusable? What percentage of total water is it? 9. What is a pollutant? 10. Give an example of a non-point source pollutant and how it can affect aquatic plants and animals. 11. Give an example of a point source pollutant. 12. What is conservation? 13. List 5 ways that we can conserve water. 14. Match the definition to the following terms: Disinfection ______ a. water that is safe to drink Secondary treatment ______ Sludge ______ Denitrification ______ Primary treatment ______ Potable water ______ b. Organic material removed from sewage c. Process using bacteria to reduce nitrates to nitrites d. most common way is to add chorine to water to kill organic contaminates e. large screens that remove rags, sticks and other large items f. Bacteria and oxygen are added to breakdown organic matter 15. Explain what Best Management Practices are. 16. What determines how much of a pesticide should be used? 17. How can pesticides be more environmentally friendly? 18. Describe how we can detect pollution by using state-of-the-art technologies. 19. Match the definition to the following terms: Zone of aeration ______ Groundwater ______ Water table ______ Aquifer ______ Zone of saturation ______ a. a layer of permeable rock through which water flows freely b. the top surface of the zone of saturation c. in an aquifer, where the pores are full of water d. water contained in the open spaces, or pores, or soil and rock e. in an aquifer, where the pores are partially filled with water, but mostly filled with air 20. Describe some difficulties with groundwater clean up.