Fresh water

Term Definition
Water table The upper surface of underground water the upper boundary of the zone of saturation.
Water cycle The continuous movement of water from the ocean to the land and back to the ocean
Aquifer A body of rocks or sediment that stores groundwater and allows the flow of groundwater.
Porosity The percentage of the totlal volume of a rock or sediment that consists of open spaces.
Permeability The ability of a rock or sediment to let fluids pass through its open spaces, or pores.
Evaporation Takes pace when water from the oceans and the eartha??s surface changes into water vapor. Energy from the sun causes evaporation.
Condensation Takes place when water vapor cools and changes into water droplets that form clouds in the atmosphere. Water loses energy during condensation.
Precipitation Is rain, snow, sleet, or hail that falls from clouds onto the Eartha??s land and oceans.
Runoff Is precipitation that flows over land into streams and rivers. This water later enters oceans.
Percolation Is the downward movement of water through pores and other spaces in soil due to gravity.
Artesian spring A spring whose water flows from a crak in the cap rock over the aquifer
A human-made hole that is deeper than the level of the water table is called a well.
Zone of aeration Father down, the water collects in area.
Zone of saturation I this zone, the space between the rock particles are filled with water.


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