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== == Artificial dams such as on a river may have a hydroelectric power plant or station attached to them (unless they were built for irrigation or other purposes). Dams are used to store water so it can be released in a controlled way.
Hydroelectricity is derived from the potential energy that water has when it is at a height above sea level. If you visit a hydro dam you will see one side of the dam holds back water at a high level and the other side has water flowing at a low level. As the water falls to the lower level, some of the energy can be transformed into rotational energy by being directed through turbines.
Electricity is produced by a generator. The generators in a hydropower station are powered by the turbines which are powered by the falling water. As the generator turns it produces electricity. This is called hydroelectricity because its source is water (hydro is ancient Greek for water). The energy for all this originates from the sun, which evaporates water from the oceans, and that then rains or snows into the catchments for the hydro lakes.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoHydroelectricity can be caused by any displacement of water, causing a generater to move. Therfore create electricity by the magnets cylindrical movement around a metal encaused in copper wire. hydroelectriity can be obtained from things such as underwater currents, which could (i quess) also be classified as geothermal electricity because currents are caused by underwater thermals heating the bottom layer and displacing it to the top. Anyways the current can turn underwater "wind"-mills, or dams, waterfalls, rivers, etc.
Wiki User
∙ 9y agoUsing water as a source of power has been practiced for a very long time. The original applications for water as a power source was in mills. In the 1889s people began to experiment with existing concepts to power lights using water instead of coal.
Wiki User
∙ 11y agoIt is sold to towns/states. Water runs the turbines which generate power and it is distributed to the areas the pay for it.
Wiki User
∙ 13y agowater, dams
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Why is hydroelectricity used more than thermal electricity?
The cost of production of electricity from a thermal power plant is more than that of the hydroelectricity so the later is more used if both the source are available.
Why do bubbles come to the surface?
The bubbles have air or some other gas in them that is lighter than water.
Where do we get heat?
We get heat energy whenever more than one molecules or atoms come into contact with each other.
What are the limitations of hydroelectric energy?
what are the limitations of hdroelectric energy?the first one is most suitable rivers have already been dammed the second one is dams can have negative effects on the environment.
If two waves start out in phase with one another but one wave travels half a wavelength farther than the other before they come together will the waves be in phase or out of phase when they combine?
Out of phase
How many jobs are created by a hydroelectricity plant?
I have done extensive research on the job opportunities provided by these dams and other than the construction there is really only one other job. Penis sucking
What us river has more than twenty major dams that have been built on it and its tributaries?
The Colorado River/Colorado River Basin has more than twenty major dams in the river system. However, the Columbia River System has more than four-hundred dams for hydroelectricity and such.
Is hydroelectricity a substitute to fossil fuels?
Yes. If we can use more electricity from dams (hydroelectic power), we conserve fossil fuels. I also note that while hydroelectric is generally better than using fossil fuels, there are a number of disadvantages to hydroelectric power, including loss of land and negative impact on the environment when large dams are constructed. See related links.
What will happen in the year 2300?
That cannot be said with certainty. In the year 2300, there may be more buildings than now. A lot of electricity will come from hydroelectricity or geothermal energy.
Why is hydroelectricity used more than thermal electricity?
The cost of production of electricity from a thermal power plant is more than that of the hydroelectricity so the later is more used if both the source are available.
HOW Does silicon tetrachloride conduct electricity?
it conductz it bettter than hydroelectricity
How many dams in the world?
There are least 48,000 dams in the world that are more than 45 feet tall. Almost half of these dams are in the nation of China.
What are some ethics about hydroelectricity?
its proven that it is more harmful to not use it than to use it
Are their dams in botswana?
on the Metsemotlhaba River, for example, there more than 700 small dams serving a variety of purposes
Is one large dam better than two or more small dams?
The answer depends on what you mean by "better", in other words, what your purpose is. The answer also depends on the dam sites and other factors such as construction cost. Lets assume you are talking about dams on a uniform valley, and that we ignore other factors such as construction expense. If the dams are to control erosion, then probably two dams are as good as one. If the dams are to provide a reservoir of drinking water, then its easy to see that one dam holds more water: just think of replacing the downstream small dam with the big dam (whose top is at greater elevation than the top of the upstream small dam) and you can visualize it holds more water than the two small dams.) If the dams are to generate electricity, then loosely speaking, one large dam is equivalent to two small dams. This is true only if the water of the lower dam reaches the base of the upper small dam. Then the equivalent volume of water goes through both the pair of small dams and the large dam, and the sum of the heads of the two small dams equals the head of the large dam, so the generated electricity is the same.
Why is hydroelectricity better than normal electricity?
hydro electricity is better than normal electricity because it is cheaper.
How many water dams?
Dams in AmericaThere are an estimated 75,000 dams in the United States, blocking 600,000 mi (970,000 km) of river or about 17% of rivers in the nation.
