8+Science+2+Group+1+Public+Service+Announcement

=Got wind energy??? =

We Do.

//__Wind Energy__//
Issue: Humans are depleting non-renewable resources by using power generators that consume non-renewable resources. Solution: Wind power does not pollute, and does not consume and non-renewable resources.


 * What is wind energy?**

Wind energy is a converted form of solar energy. The sun heats a certain area of land; this area then absorbs the heat. The hot air rises because the volume of hot air is lighter than the volume of cold air. The cold air fills in the gaps made by the circulating hot air. The result of this is wind. Wind turbines are used to make wind energy. Wind turbines are rotating machines that convert the kinetic energy of wind to electricity.


 * Why choose wind energy?**

Wind is a renewable resource, this means the world will never run out. A wind turbine does not generate pollution or radioactive waste like most other forms of electricity. The construction of a wind turbine has less impact on the environment. If a natural disaster occurs, citizens with windmills or wind turbines will not suffer the loss of electricity.


 * How wind energy works.

The turbines convert kinetic energy (which comes from the movement of air, wind) into electric energy, electricity. Modern commercial wind turbines produce electricity by using rotational energy to drive a generator.

****What is a wind turbine made of?**

WInd turbines are made of a few blades, normally three, a rotor, and an enclosure called a nacelle that contains a drive train a top a tall tower. Each blade is about one hundred thirty feet wide, and the whole turbine is 13,260 feet tall.


 * Pros:**
 * wind energy is ample
 * renewable resource
 * widely distributed
 * inexpensive
 * reduces toxic gas emissions and the greenhouse effect
 * cost as decreased ind the 1980'
 * smaller turbines- for individual homes

Arms, Karen. //Environmental Science//. Holt, Austin Texas, 2008.
 "wind  power  ." //Encyclopædia Britannica //. //Encyclopædia Britannica Online School Edition//. Encyclopædia Britannica, 2009. Web. 1 Dec. 2009 < [|http][|://school.eb.com/eb/article-9443102] >.

Layton, Julia. "How Wind Power Works." 09 August 2006. HowStuffWorks.com.  01 December 2009. D'Silva, Roy. "Advantages and Disadvantages of Wind Energy." 05 April 2007. Buzzle.com.  01 December 2009.

//wind turbine//. Art. //Encyclopædia Britannica Online School Edition//. Web. 3 Dec. 2009 <[]>.

//windmill: California hillside//. Photograph. //Encyclopædia Britannica Online School Edition//. Web. 3 Dec. 2009 <[]>.