Wind Farm Virtual Field Trip

What can wind be used for when it comes to creating electricity? Well you are about to find out.

Our first stop today is going to be finding out what wind really is. Does anyone know? No one..? Well that is okay. Wind is the air that is in motion but no one can see it. So how do we know it is there? Well you can see it is there because of the force that it creates. It will moves leaves, trees, grass, clouds, your hair, and most importantly the wind generators. What are some cool facts about wind? It is renewable, it is an industry that is growing fast, and it is correlated to the sun and equator. Wind starts off when the warm air rises than changes temperature to cool air and it sinks down then goes back up due to another change but this time from cold to hot. There are many factors that can change the air temperature and that would include the sun, water, and airplanes.

Wind farm s and how they work. Wind has been used as a direct and indirect source of energy for a long time. It is used to sail boats when their sails are up, used to dry clothing instead of using the energy from a dryer, and most importantlt it is used to create electriy. The first wind turbine ccame from home inventors who tried to generate electricity with home made turbines. But they didn't generate lots of power. Which lead to wind farms. Wind farms are places where there a 100-500 wind turbines to create electricity for the neighboring civilizations. They are located in an open feild so that there is nothing stopping the wind or slowing it down. Valley's and oceans at the two main areas for placing a wind farm.

Once the wind gets the turbines it catches the blades that are about 122 feet and moves it. With the movement the wind will spin the main shaft an which will make the blades spin faster and that will create energy inside of the generator the wind will then transfer inside the nacelle or at the bottom of the tower, and transfer energy through the electricity cables. In side a genarator copper wires spin creating a magnetic feilds which vreates "excited" electrons which then flows down the wire. But this means with no wind there is nothing for the generator to process.

So what happens when the wind doesn't blow? Well when it doesn't create enoough electricty needed then we switch to other types of energy source. These however can be expensive and harmful to the enviroment. But because our whole world depends on energy then they have to do what is needed. Here is a list of alternative energy sources.

Now the last step on this trip is how do we send the energy. Well if you look up you can see a power line. They are a part of the energy grid that can transport the electricity to the homes. But before that you reach transformers which increases the pressure. The power grid travels all across the country. T get into our homes the power has to decrease the level so that it is safe. This will go to the substation to step down. Then they do to distribution lines and then to your home.

Now that we have finsihed back at our homes we learned that wind power has always been used and it a vital resource to civilization. FUN FACT: Wind mills date all the way back to the year 2000 BC where they were used in China. One wind turbine could power up to 500 homes.

www.softschools.com/facts/energy/wind_energy_facts/403/

http://energyclassroom.com/energy-classroom/virtual-wind-farm-tour/

Credits:

Created with images by joansorolla Creative Commons site - "Wind" • cuncon - "windmill holland energy" • Picudio - "electricity pylon field electricity"

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