Key Terms 11

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Across
  1. 2. An underground formation that contains groundwater
  2. 3. A structure built across a river to control flow
  3. 4. Safe to drink
  4. 5. Area of Earth's surface where water percolates down into the aquifer
  5. 7. Organisms that cause illness and disease
  6. 11. The amount of space between the particles that make up a rock
  7. 12. An artificial lake formed behind a dam
Down
  1. 1. Fresh water on Earth's surface
  2. 3. The process of removing salt from salt water
  3. 6. Water stored under Earth's surface in sediment and rock formations
  4. 8. A flowing network formed by streams and rivers across the land
  5. 9. The ability of rock or soil to allow water to travel through
  6. 10. Area of land that is drained by a river