Energy around us By Mario Martín


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Energy around us By Mario Martín

  1. 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 light bulbs. Sound energy.Objects that emit sounds have this energy,like musical instruments. Electric energy.Electrical appliances like a television or a computer use this 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 plutonium generate this energy
  2. 2.  A form of energy can transform into a different form of energy.For example,when you turn on a toaster ,electric energy transform into heat . When we move , chemical energy of the food we have eaten transform into mechanical energy. Some of these changes are simpler than others. For example when you clap your hands, you are changing kinetic energy into sound energy
  3. 3.  Electricity comes from other forms of energy that exist in nature like the kinetic energy of moving water or wind, or the chemical energy of coal Electricity is a very useful form of energy We can transport it easily trough cables It transforms into other types of energy, like the light energy of a light bulb or the thermal energy of a cooker
  4. 4.  Sources of renewable energy.these are the ones that are abndant like sunlight or the wind. And also the ones that regenerate after we use. Sources of non-renewable energy.there is only a limited amount of this type of energy, like petroleum. Fuels when they burn they turn thermal energy into chemical energy. › Coal. › Natural gas . › Petroleum. › Water we use the kinetic energy from reservoirs to produce electric energy.
  5. 5.  Wind. Wind farms turn the kinetic energy of the wind into electricity. Uranium and plutonium. They are radioactive materials .Their properties can produce thermal energy at nuclear power stations
  6. 6.  The sun. it generates light and heat energy . We use solar panels to transform solar energy into electric energy. comes from organic waste it transforms into heat energy when we burn it. Rocks and water in volcanic areas. They have lots of thermal energy that we can convert into electric energy. Waves and tides. They have kinetic energy that is used to create electric energy.
  7. 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. 8.  Changes in the landscape. The construction of reservoirs to store water for hydroelectric stations floods valleys, fields and even towns. Negative effects on the living things.Hydroelectric dams block the routes of many migrating fish. Pollution.This contamination increases the amount of carbon dioxide in the atmosphere,wich contributes to the Earths global warming .Other gases combine with water vapour in the air.These polutanslater fall down to Earth along with the rain.This called acid rain. Depletion of non-renewable energy sources.Fuels are non-renewable sources of energy that can deplete over time.
  9. 9.  Turn off the lights. Use public transport. Turn off heaters and air conditioning. Avoid opening the door of the fridge.
  10. 10. THEEND