Energy around us By Mario Martín

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Transcript of Energy around us By Mario Martín

  • 1. They are different types of energy. Mechanical or Kinetic energy. Moving objects have his type of energy,like a moving a car. Light energy. Objects emit light have this energy,like the sun or lightbulbs. Sound energy.Objects that emit sounds have this energy,like musicalinstruments. Electric energy.Electrical appliances like a television or a computer usethis type of energy. Thermal or heat energy.Objects with this energy release heat,like fire. Chemical energy.Food,batteries and fuel generate this type of energy. Nuclear energy.Some chemical elements like uranium or plutoniumgenerate this energy

2. A form of energy can transform into adifferent form of energy.For example,whenyou turn on a toaster ,electric energytransform into heat . When we move ,chemical energy of the food we haveeaten transform into mechanical energy. Some of these changes are simpler thanothers. For example when you clap yourhands, you are changing kinetic energyinto sound energy 3. Electricity comes from other forms of energythat exist in nature like the kinetic energy ofmoving water or wind, or the chemical energyof coal Electricity is a very useful form of energy We can transport it easily trough cables It transforms into other types of energy, like thelight energy of a light bulb or the thermalenergy of a cooker 4. Sources of renewable energy.these are the ones that areabndant like sunlight or the wind. And also the ones thatregenerate after we use. Sources of non-renewable energy.there is only a limitedamount of this type of energy, like petroleum. Fuels when they burn they turn thermal energy intochemical energy. Coal. Natural gas . Petroleum. Water we use the kinetic energy from reservoirs to produceelectric energy. 5. Wind. Wind farms turn the kinetic energy ofthe wind into electricity. Uranium and plutonium. They areradioactive materials .Their properties canproduce thermal energy at nuclear powerstations 6. The sun. it generates light and heat energy .We use solar panels to transform solarenergy into electric energy. comes from organic waste ittransforms into heat energy when we burnit. Rocks and water in volcanic areas. Theyhave lots of thermal energy that we canconvert into electric energy. Waves and tides. They have kinetic energythat is used to create electric energy. 7. Hydroelectric power stations. These are the most common . They use the energy from reservoirs where water falls with great force.Thermal power stations. They get energy by burning fuels such as coal or petroleum . The thermal energy created from their combustion heats water that is converted into steam . Steam moves turbinethat generates electricity when it turns .Nuclear power stations. They use uranium or plutonium to produce thermal energy .That energy is used to obtain the steam that moves a turbine that generates electricity .Solar power stations. They transform the sun`s energy directly into electricity through photovoltaic panels.Wind farms. They use the winds kinetic energy. The electricity produced at a power station is tranported along power lines to the areas where it is going to be used. 8. Changes in the landscape. The construction ofreservoirs to store water for hydroelectric stationsfloods valleys, fields and even towns. Negative effects on the living things.Hydroelectricdams block the routes of many migrating fish. Pollution.This contamination increases the amount ofcarbon dioxide in the atmosphere,wich contributesto the Earths global warming .Other gases combinewith water vapour in the air.These polutanslater falldown to Earth along with the rain.This called acidrain. Depletion of non-renewable energy sources.Fuelsare non-renewable sources of energy that candeplete over time. 9. Turn off the lights. Use public transport. Turn off heaters and air conditioning. Avoid opening the door of the fridge. 10. THEEND