INDEX-Energy definition-Types of energy-Renewable and non-renewable energy-Enviromental impact-Energy power stations-Wind turbines-Photo gallery
ENERGY DEFINITION Energy is the capacity of an object of doing a work. All objects need energy to work Energy is measured in calories and joules.To measure larger quantities we use kcal and kJ. 1 cal = 4.18 J
TYPES OF ENERGY MECHANICAL ENERGY Kinetic energy: It is the energy related to movement.Potential energy: It is the energy related to the posititon of the objects.
ELECTRICAL ENERGYIt is the energy related to an electric current. Thanks to this energy, machines connected to sources of electricity work.
ELELECTROMAGNETIC ENERGY It is the energy transported byelectromagnetic fenomena. Luminous energy is a type of electromagnetic energy.
SOUND AND CHEMICAL ENERGYSOUND ENERGY: CHEMICAL ENERGY: It is the energy storedIt is the energy related inside substances. It with sound waves can be released or which vibrate absorbed.
NUCLEAR AND THERMAL ENERGYNUCLEAR ENERGY: THERMAL ENERGY:It is the energy inside It is the energy related nuclei of atoms. to the temperature.
Renewable energy sourcesHydraulic energy: It is Solar energy: It is thethe mechanical energy taken fromenergy produced by solar light.water movement.
Renewable energy sourcesWind energy: It is the energy produced by the wind.Marine energy: It is the energy from the movement of the sea water.
Renewable energyBiomass: It is produced from plant remains, forest and agriculture waste, high-energy plant and organic waste in sewage. It is used to produced electricity and to transform fuel.Geothermal energy: It comes from heat stored in the earths crust.
NON-RENEWABLE ENERGY SOURCESNuclear energy: It is the Coal: It was formed energy inside the nuclei from the remains of of atoms. plants. It is black andNuclear fusion=Two nuclei light. join to form a bigger one.Nuclear fission=A big nucleus divides into two lighter ones. It is the process used in nuclear power stations
NON-RENEWABLE ENERGY SOURCESPetroleum: It is formed Natural gas: It is a from decomposed mixture of plants and animals. It gases,which contains is black liquid,with a high quantity of lower density than the methane. It is found water. in underground gas fields and in porous rocks.
Environmental impactIncrease of greenhouse gases: Acid rain:It is produced when we It is caused by burning burn fossil fuels.It coal or petroleum. release carbon When they are dioxide,which burnt,ther produce produces an increase sulphur and nitrogen in temperature. oxide. Acid rain pollutes rivers,lakes, and can damage monuments and buildings.
ENVIRONMENTAL IMPACTOil spills: It is when Nuclear waste: It has to petroleum is released be stored very into the sea by safely,because it can accident. produce radioactivity.Water temperature´s Atmospheric pollution: increase: It is Dangerous gases are produced by thermal emitted to the power stations´ atmosphere activity.
ENERGY POWER STATIONSEnergy comes in different forms. The most usual is electrical energy. It is easy to generate, and it can also be generated through a lot of different ways by varied types of power plants. Although the word generated is commonly used with the word energy, it is a fact that energy cannot be generated or destroyed. We can just change the form of energy. At power plants too, energy that is available in a particular form is converted into another form.
ENERGY POWER STATIONSNuclear power stations: Thermal power plants: They work by the These power plants process of fission (a generate electrical big nucleus is divided energy from thermal into two lighter ones). energy (heat) They use reactors.
ENERGY POWER STATIONSHydro power plants: Solar power plants: In These plants use the these plants, Sun kinetic energy of light is concentrated flowing water to on photovoltaic produce electrical surfaces which energy. They use convert the Suns turbines. energy into electrical energy.
ENERGY POWER STATIONSWIND TURBINES: Wind turbines are used to generate electricity from the kinetic energy of the wind.However, a French engineering firm has recently discovered another way of using this turbines.By this method, the turbines can manufacture drinkable water from humid air.Is this process is developed, turbines will allow some isolated areas to be self-sufficient,because one turbien can produce 1000 litres a dayFor the moment, it is too expensive,but as time passes,it will have a more reasonable prize.