Mateus-Sergejus-Laszlo


 * Topic:** Renewable energy


 * Goal:** To inform


 * Audience and characteristics:** Education ( University students) ;Age (between 20-25 years) ; Gender (female, male)


 * Specific purpose:** To inform my audience about the importance and opportunities of using renewable energy sources.


 * Main idea:** Using renewable energy sources is getting more important in our life, because the non-renewable energy sources have some disadventages


 * Introduction**

1. What is renewable energy ? 2. Why do we need these ? 3. Types of renewable sources.


 * Body**

I. What is renewable energy ? 1.Renewable energy is energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable (naturally replenished).

II. Why do we need this ? A. We need renewable energy, in the next couple of decades, because: 1. There are many, many more people on the planet than ever there were before. 2. The people who are on the planet (pretty much everywhere bar sub-Saharan Africa) are using much more energy each decade than they ever did. 3. For avoiding disasters. B. Saving energy. 1. We can all help protect nature while saving on our own energy bills by simply generating our own energy from the sun and wind and start living off the grid. C. Environmental problems. 1. We need renewable energy because most of our energy comes from burning fuel, which pollutes the environment. 2. Water, air pollution, nuclear waste.

III. Types of renewable sources. A. Solar energy. 1. Comes from the sun to heat or light buildings, to generate electicity, to heat the hot water. 2. The sun is free, but the solar cells and other equipments are very expensive. 3. Varies with the season and weather. B. Wind power. 1. Windmills -> to pump water or grind grain. 2. Wind turbines -> to genetare electricity. 3. World’s fastest-growing energy technology, 1% of the world’s electricity, comes from this way It requires big territories. C. Hydro power. 1. Uses water to power machinery or make elctricity. 2. It gives the 20% of the World’s electricity. 3. Renewable due to the water cycle. 4. Hydroelectric energy, Micro hydro system, Damless hydro system, Ocean energy. D. Geothermal energy. 1. Obtained by tapping the heat of the Earth 2. Expensive to build, but cheap to operate 3. Dry steam, flash plants, binary plants 4. Hot dry rocks technology 5. Main users: USA, Iceland, Chile, Philippines E. Biomass and biofuel. 1.Material from living, or recently living organisms. 2. Wood, waste, (hydrogen) gas, and alcohol fuels.

1. Statistics. 2. Pictures.
 * Supporting materials: **

Many forms of energy that we have grown dependent on are from non-renewable energy sources. This means that when the energy has been consumed, the supply has gone and cannot be replaced. An example of this is coal. Coal is known as a fossil fuel and is the largest source of energy for the generation of electricity worldwide. When coal has been mined and burnt, it cannot be replaced. Finding alternative energy sources, ideally from renewable sources, will decrease our dependency on fossil fuels and other non-renewable energy sources.
 * Conclusion:**


 * Slides**: http://www.slideshare.net/awsomejedi/renewable-sources-of-energy