Across
- 3. an __ is an example of groundwater
- 5. what is the area where a river dumps into an ocean?
- 7. the lines that create 2D representations of things like mountains, valleys and rivers are called __ lines
- 10. the __ aquifer is the largest aquifer in the U.S. and is underneath MANY states
- 11. When pollution CAN NOT be traced back to one single source, but many, this is called __ source pollution
Down
- 1. __ is one of many examples of surface water
- 2. ___ is less likely to be polluted than surface water because they would have to get through A LOT of layers of rock and soil before reaching the groundwater
- 4. one reason why we plant trees and flowers and do not urbanize (build buildings) is to increase the ability of a watershed to absorb water rather than have lots of __ or flooding
- 6. the movement of solid materials such as rock or soil by weather events is called __
- 8. all sediment once started as __
- 9. you can tell the difference between a hill and a depression on a topographical map because a valley/depression will have ___ lines