aquifer
The layer of rock and soil that groundwater flows through.
condensation
the changing of a gas into a liquid
evaporation
the changing of a liquid into a gas
precipitation
water leaving clouds as rain, snow, sleet, or hail.
reservoir
a lake formed behind a dam
salinity
a measure of how salty water is
sleet
frozen rain drops
sublimation
when ice turns into water vapor without first melting
water table
the top level of groundwater in an aquifer