Aquifer  Water stored in rock and soil underground 

Climate Change  Long-term changes in temperatures and weather patterns.

Condensation  The phase of the water cycle when water vapor cools down and turns into water droplets. 

Evaporation  The phase of the water cycle when liquid water is heated by the sun and turns into vapor.  

Infiltration The movement, or soaking, of water from the surface into and underneath the ground.

Interception Precipitation that doesn’t reach the ground because leaves, buildings and other objects get in the way.

Percolation  The movement of water through the soil.

Precipitation  The phase of the water cycle in which water falls, in a liquid (rain) or solid (snow, sleet) state, from the earth's atmosphere to the earth.

Transpiration   The phase of the water cycle in which plants and trees respond to heat from the sun by releasing liquid water into the air.

Urban Water Cycle  The process by which humans extract, process, distribute and consume water.

Urbanization  The growth of cities.

Water Cycle  The continuing movement of water--in liquid, solid, and vapor states--in and around the earth.