Unit 6 Mining and Water Resources

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Across
  1. 4. (two words) Water that is relatively pure and contains few dissolved salts.
  2. 6. (three words) A surface mining technique that involves digging a large pit in the ground to remove minerals near the surface.
  3. 7. Fresh water stored beneath Earth’s surface in rock or soil.
  4. 10. (two words) A mining method in which the tops of mountains are removed to expose coal seams underneath.
  5. 11. (two words) The upper level of the zone of saturation in an aquifer.
  6. 13. Describes material through which water can pass.
  7. 14. An artificial lake created behind a dam for water storage.
  8. 16. (two words) A mining method in which material in riverbeds or streambeds is sifted to extract deposited resources.
  9. 18. An underground layer of permeable rock or sediment that stores and transmits groundwater.
  10. 19. A mineral or group of minerals that is mined so that a metal or metals can be removed from it.
Down
  1. 1. A process in which ores are heated to separate metals from other elements.
  2. 2. The process of removing salt from saltwater to produce fresh water.
  3. 3. (three words) Pollution that comes from a single, identifiable source.
  4. 5. (three words) Pollution that comes from many diffuse sources spread over a wide area.
  5. 8. (two words) The continuous series of processes that cause rock to change from one type to another, including igneous, sedimentary, and metamorphic stages.
  6. 9. (two words) An area where water from Earth’s surface enters an aquifer.
  7. 12. (two words) A mining method in which soil and rock are stripped away to expose mineral deposits close to Earth’s surface.
  8. 14. Water that flows over land into bodies of surface water after precipitation.
  9. 15. A structure built across a river to control the flow of water.
  10. 17. The land area that supplies water to a river system.