Construction jobs are only temporary whilst the dam and power station are being built. Dams can be very expensive as they are huge engineering projects that require vast financial resources. This is called a water transfer scheme. This means that at present desalinisation remains a process available only to the wealthiest of countries. Skip to navigation Skip to content. One way in which we manage water supply is to build huge concrete and steel structures called dams. Improve your geography skills in this quiz. The dam has a huge series of locks running up one side to aid navigation, and will generate huge amounts of electricity. Destruction of habitat critical to some highly-endangered species. The floodwater flows into the relief channel and is taken either to an area where it can be absorbed, or re-enters the river further down its course.
The dam traps water, which builds up behind it, forming a reservoir. the river speeds up the water so high volumes of water can pass through an area quickly. Learn about and revise the management of water resources with GCSE Bitesize Geography (AQA).
Dams and reservoirs can also prevent flooding. Reservoirs store water, especially during periods of prolonged or heavy rain Dams are very expensive to build; Creating a reservoir can flood existing AQA Unit 4A Geography question» · AQA GCSE Geography Exam.
This is linked to a generator via a gearbox. Hydroelectric Power Hydroelectric power is a topic that you study in relation to several sections of your geography GCSE and also in different subjects, for example science.
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Construction jobs are only temporary whilst the dam and power station are being built. The inclusion of a hydroelectric plant is a secondary concern. A turbot. Hard engineering involves building artificial structures which try to control rivers.
Dams and reservoirs Advantages and disadvantages table in GCSE Geography
This can ensure a steady flow of water throughout the year rather than the usual seasonal variations.
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|Building access roads to construct the dam. Straightening the river speeds up the water so high volumes of water can pass through an area quickly.
On page 10 you can read about the Kielder water transfer scheme which operates in the UK. You'll need to subscribe.
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Hydroelectric power stations can be started up very quickly to put extra electricity into the National Grid when electricity demand is high. When farmland is flooded, farmers need compensation for their loss of income. The valleys are narrower so the dams are not as wide, cutting construction costs.
Build dams and reservoirs Dredge river beds n flooding. The most recent serious flood was in January 46 Understanding GCSE Geography. 2 Try to stop the river flooding, e.g. by building dams, raising levées, planting a large dam and reservoir or a basin with no reservoir or dam Know your case.
River management AQA Revision 3 GCSE Geography BBC Bitesize
A page of resources to help with AQA's GCSE Challenge of Resource management unit. People can also be displaced by the dam site and the reservoirs that In the past, desalination was deemed too expensive to be considered a viable.
Hydroelectric scheme dams are expensive to build. These projects involve high levels of engineering skill and resources, and include dams and reservoirs, water transfers and desalination.
Their reservoirs contain three times as much water as all the world's rivers, and constantly lose close to four Niagara Falls to evaporation. This form of electricity generation does not produce acidic gases. You've had your free 15 questions for today.
More sustainable solutions are also possible that are smaller in scale, less expensive and can be maintained by local people. Over a million people would need to be re-homed.
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office el embalse dam, reservoir la empresa company, firm la escasez shortage los The carbuilding industry has greatly increased in Spain in the last two.
embalse — dam, reservoir la escasez — shortage los escombros — rubble The car building industry has greatly increased in Spain in the last two decades.
Building a dam for even a small hydroelectric scheme is usually very expensive and can take many years.
Although hydroelectric power is clean and renewable, it still has an effect on the environment. It is possible to generate small amounts of electricity from the water flowing along a river or stream, however, commercial power plants work by storing water behind a dam in a reservoir. Hydroelectric schemes are never built in mountainous areas.
The dam will protect over 25,ha of farmland.
It is a renewable source of energy. These dams block rivers and cause the water carried by rivers to back up and flood the valley upstream of the dam creating a large lake known as a reservoir.