Crossword Puzzle

4. drainage of water on the ground.
5. the interface between land and a river or stream.
9. change of water vapor to liquid water.
10. change of water to water vapor.
11. an area of land where water collects when it rains, often bounded by hills
12. natural phenomena undergone by water.
14. absorption of water by the soil.
15. the area that drains into a single river.

1. the process by which water travels downwards through the tiny spaces between rock and soil particles.
2. the process by which water vapor in the air is changed into liquid water.
3. evaporation of water from trees and plants.
6. the process in which earthen materials are worn away and transported by natural forces such as wind or water.
7. this is a measure that compares the total length of streams in a catchment with the catchment area.
8. removal of water from the soil by roots.
13. a method used to measure the size and concentration of a stream network in a catchment.