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Alternative Energy Resources

Alternative Energy Resources. Renewable Resources. TEKS & Objective . 5.7; 5.7C; 5.1; 5.1A; 5.2; 5.2F; 5.4; 5.4A

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Alternative Energy Resources

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  1. Alternative Energy Resources Renewable Resources

  2. TEKS & Objective • 5.7; 5.7C; 5.1; 5.1A; 5.2; 5.2F; 5.4; 5.4A • Students will identify alternative energy resources. They will look at alternative energy resources in the light of how they would be a useful alternative to fossil fuels to satisfy the world’s energy needs.

  3. Vocabulary • Alternative Energy • Wind • Solar • Hydroelectric • Geothermal • Biofuels • Biomass

  4. Let’s Take a Look • Look at the following pictures. • What do you notice about these picture? • Think about they types of energy they represent. • Are all of them renewable resources?

  5. Alternative Energy Resources • You will be creating a flip book to put in your science journals. • When we are finished we will be cutting both parts out and gluing the information down completely and then gluing only a section of the top part so that it flips open to what is under it. • You will be completing each section as the slides are shown. You do not have to write the information word-for-word.

  6. Solar Energy from the Sun • How It Works • Photovoltaic or photoelectric cells are used to convert sunlight directly into electricity. • Uses • Heat water, cook food, power lights, used on satellites • Renewable • Yes, as long as the Sun remains burning • Advantages • Free • Does not need fuel • Produces no waste or pollution • Safe • Disadvantages • Large power cells are expensive. • Needs mostly sunny climate • Energy has to be stored.

  7. Photovoltaic or Photoelectric Cells

  8. Wind Energy from Moving Air • How It Works • Wind is converted into electrical or mechanical energy. • Uses • Produce electricity, used on satellites • Renewable • Yes, as long as the Sun heats the air and causes winds • Advantages • Free • Does not need fuel • Produces no pollution • Disadvantages • Doesn’t work without wind • Can be noisy • May kill birds

  9. WavesEnergy from the Ocean • How It Works • Wind is converted into electrical or mechanical energy. • Uses • Produce electricity • Renewable • Yes, as long as wind blows across water • Advantages • Free • Does not need fuel • Produces no waste • Can produce a great deal of energy • Disadvantages • Needs strong and consistent waves • Can be noisy • Equipment must be able to withstand very rough weather.

  10. Geothermal Energy from Below the Crust • How It Works • Steam is collected and used to drive a turbine. • Uses • Produce electricity, heat homes • Renewable • Yes, as long the rocks remain heated by magma • Advantages • Needs little or no fuel • Minimal physical impact on the environment • Disadvantages • Dangerous gases can come up from underground. • Power plants can only be built in specific locations.

  11. Hydroelectric Energy from Falling Water • How It Works • The kinetic energy of falling water is converted to electrical energy. • Uses • Produce electricity • Heat/cool homes • Renewable • Yes, as long as the water cycle continues • Advantages • Very reliable • Water can be stored in dams for future use. • Disadvantages • Expensive to build dams • Causes upstream flooding

  12. Biofuel Energy from Organic Material • How It Works • Biofuel energy works by using fuels derived from living or dead biological organisms. • Uses • Replaces gasoline or diesel for vehicles • Renewable • Yes, as long as there is organic material/waste being produced. • Advantages • Reduces waste materials • Fuel tends to be cheap. • Disadvantages • When burned, it creates greenhouse gases.

  13. Energy from Other Sources • Tidal • Uses the tides to generate energy • Nuclear • Splits the atom to produce energy • Waste • Burns garbage to produce energy • Hydrogen Cells • Converts hydrogen gas and oxygen to electricity • All forms of energy have advantages and disadvantages.

  14. Outside Resources • http://www.altenergy.org/ • http://www.alternative-energy-resources.net/ • http://www.ausgrid.com.au/Common/Education/About-energy/Renewable-energy.aspx • http://www.scienceonline.co.uk/energy/renewable-energy.html • http://www.kids.esdb.bg/newenergy.html • http://www.energyquest.ca.gov/story/ • http://www1.eere.energy.gov/kids/renergy.html • http://c03.apogee.net/contentplayer/?coursetype=kids&utilityid=nespower&id=16272

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