Energy definitionEnergy:It is the capacity of an object or body to work
Types of energyMechanical energy ·Kinetic energy:The energy of movement. ·Potential energy: The energy when the objects are moved from their stable positionn.Elecytical energy ·The energy of an electric currentElectromagnetic energy ·Is transported by electromagnetic wavesSound energy ·Is asociated wiith sound wavesChemical energy ·It is acumulated in subtancesNuclear energy ·It is stored in the nuclei atomsThermal or calorific energy ·This energy is from the vibration of pareticles in matterLuminous energy ·It iis generated by the sun or artificial lights
Energy sourcesEnergy sources are natural resourcs that provide different form ofenergy. There are two types of energy sources: Non-renewableand renewable.
Non renewable· Nuclear energy:It is produced from nuclear reactions ofcertain atoms.·Coal:It is formed from the remains of plant that were buried andtransformed in te absence of oxygen.there are two types ofextraction: open-cast mine and underground mines. · Petroleum: It is formed from the buried remains of plant and animals that have descomposed . ·Natural gas:is a naturally occurring hydrocarbon gas mixture consisting primarily of methane.Natural gas is found in deep underground natural rock formations.
RENEWABLE ENERGY·Hydraulic energy: Is power derived from the energy of fallingwater. ·Solar energy: Radiant light and heat from the sun, has been harnessed by humans since ancient times.
RENEWABLE ENERGY·Marine energy: Marine energy or marine power refers to theenergy carried by ocean waves, tides, salinity, and oceantemperature differences.·Geohermal energy: Geothermal energy is thermal energy generated and storedin the Earth.Thermal energy is the energy that determines the temperature ofmatter.
RENEWABLE ENERGY·Biomass: Biomass, as a renewable energy source, isbiological material from living, or recently living organisms. ·Biofuel:Biofuel is a type of fuel whose energy is derived from biological carbon fixation.
PowerstationsPowerstation:Is an industrial facility for the generation ofelectric power.There are four types:Nuclear power stations:work on the chemical process offission. Nuclear reactors are used to generate electricity.Thermal powerstation: These power plants generateelectrical energy from thermal energy.
PowerstationsHydro powerstations:These powerstation use the kinetic energyof flowing water to produce electrical energy. Hydro power plantsstore water in large reservoirs. Water in these reservoirs flowdown the dam and rotate a turbine.Solar powerstaion:Powerstation in which the rays of the Sun areconcentrated into a single beam using lenses and mirrors.
Environmental impactsEnvironmental degradation can occur naturally, or through human processes.The largest areas of concern at present are the loss of rain forests, air pollutionand smog, ozone depletion, and the destruction of the marine environment. CFCs, or chlorofluorocarbons, are the primary cause of ozone depletion. When industrial processes release these chemicals, they rise into the stratosphere and degrade the ozone.Acid rain, smog and poor air quality have been the result of air pollution. Bothindustrial operations and automobiles have released gigantic amounts ofemissions that have intensified these problems.Deforestation and the logging industry have destroyed many tropical rainforests around the world. This has destroyed many natural habitats, and theplants and animals native to the areas.
file:///mnt/temp/oo/20120519110100/imagenes/wind-power%5B1%5D.gif file:///mnt/temp/oo/20120519110100/imagenes/wind-power%5B1%5D.gif Wind turbine Do you think wind turbine can produce fresh water?Yes becouse in air,there is water evaporated Eole Water claims to have successfully modified the traditional wind turbine design to create the WMS1000, an appliance that can manufacture drinking water from humid air. All air trapped during this procedure is then directed through an electric cooling compressor situated behind the propellers. This contraption extracts humidity from the air, creating moisture which is condensed and collected. The water gathered at this stage is then transferred down a series of stainless steel pipes, which have been specially modified to aid the water production process, to a storage tank in the base of the turbine. Once there, the water is filtered and purified before it is ready for use and consumption.One turbine can produce up to 1,000 liters of water every day, Alumnos:Alfonso García Durán y Belén Díaz García 2ºB