| __ | 1. | aquifer | | A. | the evaporation of water from plants |
| __ | 2. | condensation | | B. | the falling of any form of water from the air to the ground |
| __ | 3. | evaporation | | C. | change of liquid water to water vapor |
| __ | 4. | groundwater flow | | D. | change of water vapor to liquid water |
| __ | 5. | percolation | | E. | when liquid water runs downhill on earth's surface |
| __ | 6. | precipitation | | F. | water that moves underground through soil or rock |
| __ | 7. | reservoir | | G. | the infiltration of water from the surface to the subsurface |
| __ | 8. | surface runoff | | H. | underground bed or layer yielding ground water for wells |
| __ | 9. | the sun | | I. | source of energy that powers the water cycle |
| __ | 10. | transpiration | | J. | an artificial lake used to store water |
| __ | 11. | impermeable | | A. | occurs when pollutants are placed of poured on the surface |
| __ | 12. | infiltration | | B. | able to be passed through by a substance such as water |
| __ | 13. | karst topography | | C. | unable to be passed through by a substance such as water |
| __ | 14. | ordinary well | | D. | groundwater is reached by drilling and pumped to surface |
| __ | 15. | percolation | | E. | the boundary between zones of aeration and saturation |
| __ | 16. | permeable | | F. | underground region where pore spaces are filled with air |
| __ | 17. | water pollution | | G. | underground region where pore spaces are filled with water |
| __ | 18. | water table | | H. | area of limestone caves, sinkholes formed by carbonization |
| __ | 19. | zone of aeration | | I. | the flow of water from the land surface into the subsurface |
| __ | 20. | zone of saturation | | J. | the slow movement of water through the pores in soil |