Pàgines

divendres, 15 de març del 2013

Energetic resources


The energy is probably the most important material thing that we have. If the power fails, people will turn into the chaos but, which is the origin of this energy? Is the way that we get energy the most correct? Here we are going to see it.

The energy can be classified in two big groups, the conventional energies and the alternative energies. Both are the mix of the availability and the impact in the environment.

Conventional energies are those which are renewable and no renewable energies, which are traditionally used and which have a big impact on the environment.

Alternative energies are those which are renewable and which have a little impact in the environment.

Conventional energies
1.   Coal energy
Coal is the most important fossil combustible in the world. Mainly is formed by the decomposition of organic material.
The coal was fundamental in the industrialization.
The coal energy increases the pollution and the higher temperatures in the planet. It also causes acid rains.
 
2.   Petrol and natural gas energy
Both energies are relatively recent but currently are two of the most used in the world.
The petrol is formed, generally, in the sea by the plankton whose accumulate into the sea floor.
The natural gas is mainly formed when the temperature which the petrol is increase so, some of the petrol evaporates and becomes gas.
The petrol causes a lot of pollution in every process of refinement. However the natural gas not much as petrol.
 
3.   Nuclear energy
It’s the most polluting energy that exists.
It’s origin by the collision of the subatomic parts of a radioactive element. The energy that it releases is the big part of the energy that we use in our houses.
The impact that this energy can do in the environment is alarming. The radioactive elements which are used on these collisions are too dangerous for people and for the earth.
 
4.   Hydraulic energy
The humanity has always used this kind of energy. To get hydraulic energy it is necessary the current of the water and that’s all. The impact that these centrals do in the environment is only social and ecologic.
 
Alternatives energies
1.   Aeolian energy
The human race has been using this kind of energy for hundreds of years. It’s formed only by the strength of the wind.
When there are so many wind turbines, we call the place where they are “aeolian park”. The only impact that it causes is visual.
 
2.   Solar energy
It’s one of the best renewable energies. We get the energy using solar plates. There are subtypes of how we use this energy like the warm energy and the photovoltaic energy.
It’s too clean and inexhaustible too, so it’s perfect.
The only impact that it causes is visual.
 
 
3.   Waves energy
It is too similar to the hydraulic energy but instead of use the current of water, it uses the strength of the waves and the tide.
It’s too clean and economic too. Lots of countries with coast use this type of energy.
 
4.   Biomass energy
We obtain this energy by the burn of organic material from the earth. The energy that becomes is called bioenergy.
It can be a little bit polluting because of cremation of the organic material; it releases CO2 to the atmosphere. However, it’s one of the most used.
 

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