23 terms

Holt Environmental Science Chapter 11 HUG HS

Chapter 11
Surface Water
All the bodies of fresh water, salt water, ice, and snow that are found above the ground.
River system
A flowing network of rivers and streams draining a river basin.
The area of land that is drained by a water system.
The water that is beneath the Earth's surface.
A body of rock or sediment that stores groundwater and allows the flow of groundwater.
The percentage of the total volume of a rock or sediment that consists of open spaces.
The ability of a rock or sediment to let fluids pass through its open pores.
Recharge zone
An area in which water travels downward to become part of an aquifer.
Suitable for drinking.
A microorganism, another organism, a virus, or a protein that can cause disease, an infectious agent.
A structure that is built across a river to control a river's flow.
An artificial body of water that usually forms behind a dam.
A process of removing salt from ocean water.
Water pollution
Contamination of water by waste matter or other material that is harmful to organisms that are exposed to the water.
Point-Source Pollution
Pollution that comes from a specific site.
Nonpoint-Source Pollution
Pollution that comes from many sources rather than from a single specific site; an example is pollution that reaches a body of water from streets and storm sewers.
Water that contains wastes from homes or industry.
Artificial eutrophication
A process that increases the amount of nutrients in a body of water through human activities, such as waste disposal and land drainage.
Thermal pollution
A temperature increase in a body of water that is caused by human activity and that has a harmful effect on water quality and on the ability of that body of water to support life.
The accumulation of pollutants at successive levels of the food chain.
waste water treatment process
1. Screening: 2. Pumping: 3. Aerating:
4.Removing sludge 5. Removing scum:
6. Killing bacteria:

The treated water (called effluent) is then discharged to a local river or the ocean
water footprint
the total daily per capita (person) use of fresh water
virtual water
the freshwater that is not directly consumed but is used to produce food and other products

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