Energy Misused cannot be Excused

           Energy lights our cities, powers our vehicles, and runs machinery in factories. It warms and cools our homes, cooks our food, plays our music, and gives us pictures on television.

Energy is defined as the ability or the capacity to do work.        

       

        When man discover the fire which can burn wood for cooking and heating thereby using of energy.For several years people demand  renewable energy in able to support the eternal needs.

What is the role of energy in the development of human society?

HOME-home is the place we live, it gives relaxation and to be comfortable. We always use energy in our home for our appliances ,cooks our food and  plays our music etc.Energy is so helpful to us it can provide entertainment ,relaxation and our needs.

 ICT- Information communication technology now is one of the most applicable learning that we use now it’s so very helpful to us specially student to help them for their research ,project and assignment It can also use for communication which can help those people who were overseas. And energy is always involve here cause computer can’t work without the source of energy.The invented technology cant work also without energy.

Transportation-Taxi,Buz.Jeepney,Truck and etc. are some vehicle that we need and use every day. Which provide a good aspect in terms of transportation. It can also give us income to those people who can drive and help us to not walk and to be on a right time on the place we want to go. To connect to that vehicle cannot work without energy and it helps the vehicle to heat the engine in order to work it.

Economy- Energy can help our economy in terms of the needs of people like in a fuel. Fuel is needed for vehicle so if your country can provide a tremendous fuel it can help your economy because many countries will supply and will give your country lots of money that can help to your society. And also job opportunities will increase also because they will need manufacture designing and etc.            

Environment- In terms of how do energy can help our environment. As for now we have renewable energy we can get energy from the sun, river, waste materials and etc. These renewable energy will help to environment to lessen the energy that we consume cause consuming lots of energy can have a disadvantage to our environment so we find alternatives to have advantage to us but also to our environment.

Different Renewable Energy Sources

Wind Power
Wind energy harnesses the power of the wind to propel the blades of wind turbines. The rotation of turbine blades is converted into electrical current by means of an electrical generator. In the older windmills, wind energy was used to turn mechanical machinery to do physical work, like crushing grain or pumping water.Wind towers are usually built together on wind farms. Now, electrical currents are harnessed by large scale wind farms that are used by national electrical grids as well as small individual turbines used for providing electricity to isolated locations or individual homes. In 2005, worldwide capacity of wind-powered generators was 58,982 megawatts, their production making up less than 1 of world-wide electricity use.

• Wind power produces no pollution that can contaminate the environment, Since no chemical processes take place, like in the burning of fossil fuels, in wind power generation, there are no harmful by-products left over.
• Since wind generation is a renewable source of energy, we will never run out of it.
• Farming and grazing can still take place on land occupied by wind turbines which can help in the production of biofuels.
• Wind farms can be built off-shore.

• Wind power is intermittent. Consistent wind is needed for continuous power generation. If wind speed decreases, the turbine lingers and less electricity is generated.
• Large wind farms can have a negative effect on the scenery.

Solar Power
Solar energy is used commonly for heating, cooking, the production of electricity, and even in the desalination of seawater. solar power works by trapping the sun's rays into solar cells where this sunlight is then converted into electricity. Additionally, solar power uses sunlight that hits solar thermal panels to convert sunlight to heat water or air. Other methods include using sunlight that hits parabolic mirrors to heat water (producing steam), or simply opening a rooms blinds or window shades to allow entering sunlight to passively heat a room.

            

• Solar power is a renewable resource. As long as the Sun exists, its energy will reach Earth.
• Solar power generation releases no water or air pollution, because there is no chemical reaction from the combustion of fuels.
• Solar energy can be used very efficiently for practical uses such as heating and lighting.
• The benefits of solar power are seen frequently to heat pools, spas, and water tanks all over.

• Solar power does not produce energy if the sun is not shining. Nighttime and cloudy days seriously limit the amount of energy produced.

 

 

Geothermal Energy
Literally, geothermal means, "earth heat." Geothermal energy harnesses the heat energy present underneath the Earth. Hot rocks under the ground heat water to produce steam. When holes are drilled in the region, the steam that shoots up is purified and is used to drive turbines, which power electric generators.

• If done correctly, geothermal energy produces no harmful by-products.
• Once a geothermal plant is build, it is generally self-sufficient energy wise.
• Geothermal power plants are generally small and have little effect on the natural landscape.                                                    
• If done incorrectly, geothermal energy can produce pollutants.
• Improper drilling into the earth can release hazardous minerals and gases.
• Geothermal sites are prone to running out of steam.                                                                                                                                                                                                                              Energy is so helpful to us but it can be a disadvantage or  advantage depends on how we will use it.