Across
- 4. an impervious layer of clay, silt or rock through which water cannot move quickly
- 6. the volume of fluids that pass through an area at a certain amount of time
- 8. a steep sided depression in the ocean floor that forms when one of the earth's plates slides under another
- 9. the area beneath the water table where water fills the spaces in the gravel, sand, silt, or rock
- 11. an underground zone of rock or soil that contains and yields water
- 12. water that contains a low concentration of dissolved salts
- 13. an area surrounded by high land in which all water runs to a common destination
Down
- 1. water that has soaked into the earth often between saturated soil and rock
- 2. the waste water from washing machines, baths, sinks, and like products - relatively clean
- 3. the rising and falling of the ocean surface due to the different gravitational pulls of the sun and the moon
- 5. sudden local flooding typically caused by heavy rainfall
- 7. a combination of interacting or interdependent parts that form a unified whole
- 10. the carrying away of soil particles by wind, water, or glacial ice