Across
- 6. the study of geology that is focused on the distribution and movement of groundwater in the soil and rocks of the Earth's crust
- 7. the amount of space between particles in a substance
- 9. when water leaves the aquifer, such as when it seeps into a spring
- 10. the positive benefits that an ecosystem provides to people
- 11. the highest point in an aquifer from which water can be obtained
- 13. a hole in the ground formed when water has dissolved underground rock to the point where it cannot support the land surface
Down
- 1. the supply of fresh water found beneath Earth's surface in the pores of soil, sand, and rock
- 2. all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds
- 3. pollution that is discharged over a wide land area and comes from many different sources and locations
- 4. pollution that can be traced back to a single identifying incident, such as a leak in an underground storage tank or waste discharge from a factory
- 5. the process of separating solid matter from a fluid by having the fluid pass through the pores of another substance, called a filter
- 8. when water seeps into the ground and replenishes the aquifer, such as precipitation
- 9. an underground layer of rock, sand, or gravel that holds groundwater
- 11. the contamination of natural water bodies by substances that harm organisms and environments
- 12. the ease with which substances such as water move through a material