GCSE Water resources - supply and demand
Terms in this set (16)
of the water on Earth is freshwater
Sources of water that are useful or potentially useful to humans
A river, stream, aquifer, reservoir or spring with fresh water
The amount of water needed for household, industrial and agricultural use in an area
Of all freshwater is locked up as ice in ice sheets and glaciers
Of all freshwater is groundwater, foudnin underground aquifers
Subterranean, porous, water-holding rocks that provide millions of wells with steady flows of water.
The continuous process by which water moves from Earth's surface to the atmosphere and back
This exists where water supply is greater than demand.
This exists where water demand is greater than supply.
Physical water scarcity
where natural water resources are near or have exceeded sustainable levels
Economic water scarcity
when a population does not have the necessary monetary means or technology to utilise an adequate source of water.
a large natural or artificial lake used as a source of water supply.
can be measured in terms of the chemical, physical, and biological content of water.
occurs when the demand for water exceeds the available amount during a certain period or when poor quality restricts its use.
Tend to suffer the worst economic water shortages
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