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Environmental Science: Ch.9 Water:Freshwater Resources
Terms in this set (38)
Water without high levels of salt, to live
Measures the total amount of water removed from its natural source.
Measures the amount of water lost(through evaporation,absorption,or chemical transformation)during use.
It can be recycled and reused repeatedly or that its supplies will be naturally replenished after people use it.
Not enough local water is available to meet the needs of people and ecosystems.
The available water is polluted or otherwise cant be used to meet every need.
When inadequate water supply leads to competition and conflict as people try to find ways to meet their water needs
Growing of plants as food
Bring water to the crops in these drier regions
Involves digging furrows, or channels, alongside rows of crops.
Uses a natural source of nearby flowing water, such as a river or stream,and periodically diverts the water to flood agriculture fields.
Applies small amounts of water more directly to the plants that need it.
Use pipes and hoses to move water.
Traveling Sprinkler System
Sprays water from a long arm that pivots around a center point.
Growing crops in a greenhouse without soil;plants grow in a nutrient rich water.
Doesnt consume water because the water is still available for other uses in the ecosysyem, other sources of electricity do consume water.
The pollution of water by metals or chemicals.
To use the fresh water that flows along the earths surface as rivers and streams, people change where it flows.
Canals or pipelines that carry water from its natural source to an area that needs it.
A structure that blocks the flow of a river.
Where the water is stored for human use.
The fresh water that flows through rocks and open spaces below the earths surface
Is stored in Permeable rocks and sediment through which it can flow freely.
Water filled rock
The boundary between the water-filled rock and sediment of an aquifer and the dry rock and sediment above it.
Water that seeps into the ground through the water table when it rains refills.
Surrounded by impermeable layers of rock that dont allow water to move through them
Rock that doesnt allow water to move through it.
Area Of Recharge
Where fresh water from rainfall can enter and refill the aquifer.
To withdraw groundwater stored in both types of aquifers
Where no more water can be drawn.
Cone of Depression
An area where the water table drips because water has been withdrawn from that area of the aquifer faster than it could be recharged.
Withdrawing groundwater from aquifers faster than it can be recharged.
the space created by the withdraw of freshwater may fill up with salt water rather than fresh ground water.
Process of using less water
grey water reuse system
recycle fresh water within your home.
waste water from sinks
removing salt from salt water to create fresh water
heat salt water enough that the water molecules evaporate leaving the salt behind.
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