Ali

__ Energy  __ Energy is usable heat or power; energy can be renewable and non-renewable. __ What are fossil Fuels? __ Fossil Fuels are a non renewable source of energy; it is formed from plants and animals that lived millions of years ago. Over 85% of our energy demands are met by fossil fuels. __ Renewable and Non Renewable  __ Renewable energy is energy that can be replenished after a short period of time. A few types of renewable energy are solar and hydro power. Non-renewable energy is energy that that can not be used again and can not be replenished. A few types of non-renewable energy are nuclear energy and fossil fuels. __ Wind Energy  __ Wind energy converts the energy in the wind into more useful types of energy like mechanical energy. Wind Energy produces no pollution and is a sustainable energy source. Current wind energy machines are called wind turbines. __ Positives  __ Wind Turbines are quiet, pollution free and each megawatt-hour of electricity that is generated by wind energy helps to reduce the 0.8 to 0.9 tonnes of greenhouse gas emissions that are produced by coal or diesel fuel generation each year. __ Negative  __ A negative with wind energy is that if a wind turbine is visible from a house the value of that house decreases. __ How wind energy is made  __ Wind spins the blades of the turbine which spins a shaft which connects to a generator and makes energy. (Look below for a detailed picture of inside the turbine, and a video of a wind turbine in action.)



media type="youtube" key="9gCeNCnWZhE&hl=en" height="355" width="425" __ Resources  __ http://www.thefreedictionary.com/energy http://www.umich.edu/~gs265/society/fossilfuels.htm http://www.eia.doe.gov/kids/energyfacts/sources/whatsenergy.html http://www.canren.gc.ca/tech_appl/index.asp?CaId=6&PgId=232 http://www.wvmcre.org/neg_imapcts/neg_impacts.htm http://www1.eere.energy.gov/windandhydro/wind_how.html http://www.youtube.com/watch?v=9gCeNCnWZhE