Chapter 8-Water Resources

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Across
  1. 2. Change course
  2. 6. Being in a weak or unfavourable position
  3. 9. An important resource and if we do not have it,it will cause a negative impact on us
  4. 12. Something that is produced when impurities are removed from waste water through a treatment process
  5. 14. Something that occurs when there is a shortage of water to meet the needs of the people
  6. 18. The knowledge ,skills and tools that people use to meet their needs
  7. 20. The careful use of resources to ensure that wastage is kept to a minimum
Down
  1. 1. The process where the water is disinfected using ultraviolet radition
  2. 3. The contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater)
  3. 4. The process of filtering water to remove larger sized particles and bacteria from the water
  4. 5. An area over which rain falls and is collected.This area may be a forest surrounding a reservoir
  5. 7. An agreement between two or more countries regarding a specific issue over a period of time
  6. 8. The process of water filtration used in desalination where water is boiled and the water vapour is collected and condensed into freshwater
  7. 10. The process of converting sea water into fresh water by removing salt from the sea water
  8. 11. The limit the amount of water that a person can use
  9. 13. The process of forcing water through a special membrane to remove very samll particles ,such as bacteria and dissolved salts,from water
  10. 15. Water that can be recycled
  11. 16. Substances inside a confined amount of liquid, gas, or solid, which differ from the chemical composition of the material or compound
  12. 17. The gas phase of water
  13. 19. A natural or artificial lake, storage pond or impoundment from a dam which is used to store water