Water: The Same Water In The Stone Age

The same water that people drink today is the same water people drank in the Stone Age. Water is a renewable resource that constantly moves around the earth. It can be used to make energy in a couple different ways, like hydroelectric dams, and tidal streams. However, every system has its positives and negatives.

The water cycle is the process of how water moves around the Earth. It is powered by the sun, which causes water to precipitate, and evaporate. When water evaporates it is heated up, making it move up to the clouds. When the water vapor is in the clouds it is moved by air currents. When the clouds come together they get bigger and precipitate. A lot of things take part in the water cycle, because so many things depend on it to live.

Even the ground plays a part, water goes through it and feeds roots of plants and it eventually comes back whether it comes from a well, or goes into a lake. Not only can water be used to hydrate plants and animals, but it can be used to create energy.
One of the ways water is used to make power is in hydroelectric dams. The dams are installed in rivers where the water goes through the dam or overtop. Before the water goes through a system it rests in a reservoir. If the water goes through the dam it is rushed through a penstock, which leads the turbines. The water goes through the turbines, even if the water goes over top of the dam. The turbines are connected to generators that use energy to create electricity, which is used in homes and businesses. The faster the water flows or falls, and the more force it has determines how much energy is created.
Using water to create energy has many advantages. A lot of energy sources cause pollution because they burn fuel to make the energy, but water does not burn anything, they only out water through a system. Hydroelectric dams have a high starting cost but they do not have many continuous fees because the water is supplied by the bodies of water, and it always comes back. It also does not cost much because the dams so not need a lot of repairs. The reservoirs even provide fun activities like boating and swimming.
However, the system does require water to work, so if it does not rain or if the rivers are not full enough they cannot produce energy. The dams do not have a lot of repair work but they have a very high investment cost. Even the reservoirs cause problems, because they may cause flooding and relocations of animals and people. The flooding can also tear up plants and animal habitats. Most of the disadvantages affect the nature around the dams.
A lot of environmentalists do not approve of hydroelectric dams because of what they do to the environment around the dams and reservoirs. The turbines can kill and injure fish because the fish go through the river. They can also lead salmon away from their breeding grounds, which will cause the population to decrease.