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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.
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General In The Forums

brilliantstudent
@Laura-Melina   thanks for being an amazing friend , will miss you too .....
reply about 1 hour
rainbowpoptart
What personality?  Okay, well, I'm an INTJ, to get that out of the way. I'm very blunt, and oftentimes I don't care if my honesty offends anyone. I tend to contradict myself a lot, such as how I'm very opinionated, yet super indecisive. People say I'm talented, kind and trustworthy. They also say I'm smart, hard-working and creative, and those I actually agree with. I'm a very cynical person, but I like to be positive around others to help lift their moods.
reply about 2 hours
Pinklilylane
Pinklilylane posted in Debating:
Okay so any smart person would say they don't like him. And i am a smart person. I hate him. Who would vote for a person who has grabbed women? I am mad the these dumb people have voted for a man that doesn't even know how to run things. Ya he made a company. And he is rich. He called people horrible things. He should be impeached. Hillary Clinton would be a much better president. Thank You For Your Time. If you don't like what you are seeing then please comment on my profile and i would gladly put you in your place. Thank you again. -Delaney 
reply about 4 hours
Pinklilylane
Pinklilylane posted in Debating:
"DevA3" wrote: Yes. I do support Donald Trump; because he has a good leadership quality and I am sure he will become a good president. If he can be a successful business man, then he can be a successful  president. That's my way of how I see him as a president. Lol why? Why would you support him?
reply about 4 hours
Pinklilylane
Pinklilylane posted in Debating:
"AnnaOfExquizurd" wrote: "Streety43" wrote: Donald Trump became our 45th president yesterday. Do you support him and his actions? I do support him and his actions. He's the leader of our country, whether we like it or not, and we need to help him, as our government is based on the people. When you wish for him to fail, you're practically wishing for the country to fall... which isn't a good thing for the citizens o.o Okay so i kinda get this but what are you thinking? He is dumb and he should be impeached.
reply about 4 hours