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Solar Energy

With the price of non-renewable energy sources soaring, Kidzworld takes a look at the environmentally friendly energy source we all know and love - our sun! Get the goods on solar energy right here!

How It Works

Solar energy is the energy we acquire from the sun. Millions of years before humans realized the sun's potential as a renewable energy source, plants were using the sun's energy to convert carbon dioxide and water into sugars to eat. This process is called photosynthesis. Today, we have tried to copy plants by creating something called photovoltaic (PV) cells. These man-made cells are comprised of semiconductors, which are materials that are able to absorb light energy. The most commonly used semiconductor today is silicon because it is, so far, the most cost-effective material. The silicon absorbs a portion of the energy from the light that shines down on it, electrons are suddenly knocked free and are channeled to flow in the same direction by electric fields within the PV cell. On both the top and bottom of the silicon, metal contacts are placed and, through these contacts, the solar energy is extracted and stored.

Practical Uses

Solar energy is used for a variety of different things but the ones that you are most familiar with are solar-powered calculators, solar-heated swimming pools and maybe even the hot water in your house is heated by solar panels. Because solar energy is clean and renewable, it would be ideal to make a move from non-renewable heating sources like gas to solar on a grander scale, so research is ongoing to make solar energy a more cost-effective alternative for people around the world.

Did U Know?

  • Solar energy is measured in kilowatt-hours. One kilowatt hour (kWh) is the amount of energy needed to burn a 100 watt light bulb for 10 hours.
  • Enough sunlight falls to Earth every hour to meet the world's energy demands for an entire year - the trick is learning how to extract that energy in a cost-effective way.
  • Approximately 10,000 homes in the United States are run entirely on solar power.
  • Solar energy can even be used to cook food!
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How Much Energy Will We Use By 2015?

  • 50 percent more than today.
  • 20 percent more than today.
  • 25 percent less than today.
  • 100 percent more than today.

Random In The Forums

morning_flower
morning_flower posted in General:
i have a crush but all we do is smile and say hi
reply 37 minutes
Crystal-Coldstone
Well, I wanna know is it?
reply about 3 hours
rainbowpoptart
Although I think a tree stump has more brains than the two of them combined, I would rather have Trump in office. I really dislike the guy, but his ideas are more my taste than Clinton's. He also seems sturdier than she is, mentally I mean (and physically too ofc but that doesn't matter).  I also gained more respect for Donald Trump over the past week or two.  I don't know how many of you are aware, but Louisiana was recently affected by a very bad flood. As natural disasters do, it destroyed housings and people's personal belongings and took lives. The damage to them was nowhere near as bad as that, but some of my family was affected by this flood, which I guess could give me a bit of a bias.    Donald Trump personally went down to Baton Rouge and handed out toys for children, food, and clothes, among other things. He also made a contribution fund to the state's flood relief charity. What did Hillary Clinton do? Go on Jimmy Kimmel and make fun of Trump quotes. Even if it was only to give himself a better name, the fact that he was so generous enough to provide for these poor people when Clinton, and even Obama, did not would definitely earn my vote if I were legal enough to participate in elections (which I hate to say because I don't care for both Trump and politics in general).       Though, I'd rather my cat be president. (': #VoteLily2016
reply about 4 hours
Pink_Cool_Girl
Pink_Cool_Girl posted in General:
"PunMaster" wrote:Sister Location ♥️
reply about 5 hours
Pink_Cool_Girl
HILLARY FTW
reply about 5 hours