Term Definition
Water Cycle The continuous movement of water from the ocean to the atmosphere to the land and back to the ocean.
Evaporation When water from the oceans and the Eartha??s surface changes into water vapor.
Condensation When water vapor cools and changes into water droplets that form clouds in the atmosphere.
Precipitation It is rain, snow, sleet, or hail that falls from clouds onto the Eartha??s land oceans.
Runoff Is precipitation that flows over land into streams and rivers.
Percolation Is the downward movement of water through pores and other spaces in soil due to gravity.
Transportation Is the process by witch plants release water vapor into the air.
Groundwater
Is the water present beneath Eartha??s surface in soil pore spaces and in the fractures of rock formation.
Water table The upper surface of underground water; the upper boundary of the zone of saturation.
Aquifer A body of rock or sediment that stores groundwater and allows the flow of groundwater.
Porosity The percentage of the total volume of a rock or sediment that consist of open spaces.
Permeability The ability of a rock or sediment to let fluids pass through its open spaces, or pores.
Impermeability Does not allow water or liquid to pass through it.
Artesian spring
A spring whose water flows from a crack in the cap rock over the aquifer.
Well
Fresh Water

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