Презентация на тему "Fossil fuel"

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  И.Д. Попова
  преподаватель 1 категории
  колледж «КамчатГТУ»
  

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  The aim of our work is:
  to show up the advantages and disadvantages of fossil fuel usage, its role in human’s life and impact on the environment
  Our tasks are:
  to find out how fossil fuels formed
  to define users and producers
  to ascertain some problems concerning fossil fuel usage
  Method of research is:
  analysis
  
  
  

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  What is fossil fuel ?
  
  All the machines of modern life require energy to make them run. About 90% of that energy comes from burning fossil fuels.
  Fossil fuels include petroleum (oil), coal, and natural gas. These materials are called fossil fuels because, like fossils, they are remains of organisms (plants, animals, and other living things) that lived long ago.
  
  

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  How fossil fuels formed
  
  Fossil fuels formed in the ground hundred of millions years ago. Dead organisms sank into mud and rock. Over time many layers of rock built up. The remains of the organisms slowly changed in form to become different kinds of fossil fuels. Coal came from plants. Petroleum and natural gas came mainly from microscopic organisms such as algae.
  

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  Users and producers
  
  Fossil fuels and their products have many uses. Power plants use fossil fuels to produce electricity. People heat their homes and other buildings by burning fossil fuels. Gasoline, a product made from petroleum, fuels cars and other kinds of motorized equipment.
  
  

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  Many countries produce fossil fuels. The greatest producer of the petroleum is Saudi Arabia. Russia has the largest reserves of natural gas. Major coal-producing countries include the USA and China.
  
  

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  Disadvantages of fossil fuels
  
  Since the late 1700s people have been using fossil fuels at a faster rate than ever before. But the planet’s supply of fossil fuels is limited. Fossil fuels are called nonrenewable resources. Once they are used up, they will be gone forever.
  
  

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  The use of fossil fuels harms the environment as well. When petroleum and coal burn, they release harmful gases.
  
  
  
  
  
  
  
  These gases react with moisture to create acid rain, a dangerous form of pollution.
  
  

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  Burning fossil fuels also increases the temperature of the Earth’s atmosphere. This warming, called the greenhouse effect, may be harmful to living things.
  
  

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  For these reasons scientists and engineers have developed new ways to generate power without using fossil fuels. For example, some cars are now powered by electricity instead of gasoline.
  
  
  
  
  
  
  Homes can be heated by sunlight. Some electric power plants run on nuclear energy, water power or wind power.
  
  

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  Conclusion
  The use of fossil fuel and its products is important for the industrial society as these fuels are widely used in electricity generation, transportation and industry.
  On the other hand the use of fossil fuel harms the environment causing acid rain, greenhouse effect.
  That is why conservation measures for fossil fuels involve reduced usage and new ways to generate power.
  
  

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  Thank you for attention!