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Sookdeo ES Ch.14

Water Resources

QuestionAnswer
fresh water water relatively pure with few dissolved salts
surface water water found on the Earth's top layer including rainfall, melting snow, glaciers and ice caps
runoff water that flows over land and has not been absorbed into the ground
river system water moving downhill according to gravity forming a network of connected streams and rivers
watershield all of land areas that supply water to a particular river system
groundwater water found below the Earth's surface
permeable layers of of soil and rock containing space or pores through which water can pass
impermeable layers of of soil and rock with few or no pores through which water can pass
aquifer sponge like formations of rock, sand and gravel that holds water
water table boundary between the zone of aeration, aquifer, and the zone of saturation, lower level
recharge zone any area where surface water soaks into the ground and reaches an aquifer
well a hole dug into an aquifer reaching the zone of saturation to access groundwater
water diversion moving water from its source to places where humans use it such as homes and farms
dam obstruction placed in a river or stream to block its flow
reservoir large lakes that store water water for human use
salinization build up of salts in the surface layer of soil
desalinization make more freshwater by removing salt from seawater
xeriscaping strategy to use less water for landscaping by watering at night to prevent loss of water by evaporation
point- source pollution water pollution from a location such as a factory or sewer pipe
nonpoint-source pollution pollution from many places that spread over a large area
cultural eutrophication excess of nitrogen and phosphorous in fresh water caused by humans
wastewater water used by humans in some way
algal bloom explosion of algae in an area
pathogens disease causing organisms and viruses in the air, soil and water
red tide over growth of red algae releases toxins killing animals in or near the ocean
septic system waste water disposal through an underground septic tank
Created by: dsookdeo
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