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Energy Essay EssayHowever out of this whole trouble taken from these processes hardly 30%-35% of the potential energy stored is actually transformed to electricity. And if we sum up the advantages and disadvantages, we see the following Advantage Disadvantage Produces a lot of energy Expensive to flesh Does not pollute the environment Expensive to chief(prenominal)tain 2. Fossil Fuels Fossil fuels are a type of power that has in addition caused a lot of controversy, because of the interdict effects they have on the environment (e. g. global warming and green-house effect).Fossil fuel actually comes from the remains of Dead Sea animals that died millions of years ago. And actually what happened to them, is that their study were crushed with each other and pressured by several of the earth piling on top of them until they finally formed fossil fuel but also the heat of the earths core, played a vital factor. The basic energy transformation that takes place in fossil fuel is that the potential energy stored, breaks d induce through to give heat energy, and that heat energy is transferred to kinetic energy, which drives a steam turbine that will pass electricity.The two very known fossil fuels are coal and oil. However out of this energy transformation process, only 40-45% of the potential energy stored is actually transferred to electricity. And if sum up the advantages and disadvantages, we see the following Advantage Disadvantage forte to produce Not good for environment Is not hazardous to peoples health We are running out of them After discussing the non-renewable sources, I am now departure to talk about the renewable sources, and to be exact I am going to talk about the following 3 sources 1. Hydroelectric powerThe main energy transformation that takes place in hydroelectric power is that the kinetic energy of the waves, forces generators, which function like a pendulum, swing to vibrate and once they vibrate, they generate electric energy. Out of this small process, the efficiency is only 35% out of the whole energy conversion. But this also however will depend on the wave velocity, because if it is greater, then more kinetic energy will be supplied, if we sum up the advantages and disadvantages, we see the following Advantage Disadvantage Cheap to save Expensive to build Delivers a lot of energy.Changes the ecology of the field of battle 2. Solar Power We can use the power of sun in 2 ways. The offshoot way is by using the sun trip out itself into making electrical energy this is done by the help of photovoltaic cells. And fundamentally what happens is that the sunlight hits the cells which convert these light signals into electrical signals. The second type is done by using the heat of the sun to heat the water which can be used to heat up houses directly or to drive steam turbines which will generate electricity. Also one liaison that must be taken into account, in this whole solar power issue.And that thing is the solar constant. The solar constant is the power collected at the top of the atmosphere by a unit area. But basically this can be summed up by saying that it describes the solar radiation, that falls on an area above the atmosphere at a certain angle. This constant, isnt oftentimes of a constant because it actually varies on earth with the time of day and year, as good as with the latitude and weather. The maximum values vary betwixt 0. 8 and 1. 0 KW/m2. As for the efficiency of solar power, well it is disappointing to know that it is only 30% of the suns energy is actually transferred to electricity.And if we sum up the advantages and disadvantages, we see the following Advantage Disadvantage Renewable The photovoltaic cells are very fragile Can supply the whole world on its own Useless if used in a place where there is no sun 3. Wind power A wind generator works by having the blades rotated by the wind, which causes a dynamo (which is like a generator) to spin and then elec tric energy is produced. The power delivered by a wind generator, varies on the area with the rotor length being the diameter. This is given by the following formula P=Ek/t And the efficiency of this wind generator is only 25% which is pacify poor really.And of we sum up the advantages and disadvantages, we see the following Advantage Disadvantage Provides all the energy the world needs Expensive to maintain Renewable rotor coil blades are extremely fragile After summarising, both renewable and non-renewable sources, it is time for me to chose the best type of energy resources to use for our homes. The energy resources I suggest are more than 1. First of all the energy resources should be renewable, so that we dont have to worry about the environment and peoples health (unlike fossil fuels and nuclear power).The second thing is that this renewable source, should not affect our environment or ecology (which means hydropower is dropped out ). Also the energy resource should be effici ent, so that we can pertain our basic demands for energy, (which means that wind energy also drops out ). After mentioning these three requirements (which seem essential in my own personal view), it is quiet demonstrable that the only energy source that I am talking about is Solar.But however to improve this even more, would be if we insulate our homes well and do not waste our energy for no apparent reason(e. g.like leaving the lights of a room turned on, when no one is in the room. And also acquire energy saving equipment). Because like I said at the beginning of this essay, without light we will become extinct.And we all know that we dont want to become extinct, so lets do something about it and try and save our planet. 1 U= Uranium N=Neutron X+Y= Elements Z= Number of Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in ourGCSE Electricity and magnetic forcesection. Download this essay Print Save Not th e one?