| Term | Definition |
| Precipitation | Process of water retuning to the Earth as rain, sleet or snow |
| Condensation | Water Vapor is cooled and change back to liquid |
| Transpiration | Water is evaporation into the air though the leaves and Plants |
| Evaporate | Water is Warm and change from Liquid to gas (vapor) |
| Permeable | capable of being permeated. |
| Impermeable | not permeable; impassable. |
| Zone of Saturation | Area in which all pores in filled with water |
| Zone of Aeration | The area above the water filled- zone That has drier ground and pores filled with air |
| Water Table | Surface between the Zone of saturation Aeration, below which ground is saturated |
| Surface Runoff | is the water flow which occurs when soil is infiltrated to full capacity and excess water, from rain, snowmelt, or other sources flows over the land. |
| Hard Water | soap will not later easily minerals build up in plumbing |
| Soft Water | soft later easily minerals do not build up |
| Solvent | a substance in which another substance dissolves |
| Sink Holes | Sink holes make small streams that connect to the river |
| Aquifers | An underground layer of permeable rock, sediment (usually sand or gravel), or soil that yields water. |
| Ground Water | the water beneath the surface of the ground, consisting largely of surface water that has seeped down: the source of water in springs and wells. |
| Surface Water | Water that is on the surface Such as rivers,lake,ocean |
| Limestone | a sedimentary rock consisting predominantly of calcium carbonate, varieties of which are formed from the skeletons of marine microorganisms and coral: used as a building stone and in the manufacture of lime. |