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Earth Science Vocab
Term | Definition |
---|---|
River Basin | The term used to describe an area that drains into a large river |
Watershed | The term used to decribe an area that drains into a smaller river or stream |
Wetland | an area where the water table is at or near above the land long enough during the year to support addapted plant growth |
Swamp | A type of wetland dominated by trees |
Bog | A type of wetland dominated by peat moss |
Marshes | A type of wetland dominated by grass |
Groundwater | water found in cracks and pores in sand, gravel and rocks below the earths surface |
Zone of aeration | Zone underground that involves the ground |
Zone of saturation | Zone underground that involves water |
Water table | Where the zone of aeration and the zone of saturation meet |
Porosity | The percentage of open space between individual rock particles in a rock layer |
Permeability | the ability of a rock or sediment to let fluids pass through its open spaces or pores |
Impermeable | When water is unable to penetrate a substance |
Aquifer | A rock later that stores fround water and allows the low of water |
Artesian well | A crack in an impermeable that contains water |
Discharge area | area where groundwater is leaving an aquifer |
Recharge Area | area where surface ater enter and replenishes the ground water stores |
Water springs | natural occurence where water flows to the surface of the earth from below the surface |
Estuaries | places near the coast where freshwater and saltwater mix (brackish water) |
Flooding | a temporary rise of the water level, sulting in it's spilling over and out of its natural or artificial confines onto land that is normally dry |
Saltwater Intrusion | movement is generally from land freshwater groundwater to ocean's saltwater |