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Solar Energy

Solar energy is a clean, renewable source of energy.
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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Comments

dzaystream

dzaystream wrote:

thanks i needed this :)
commented: Wed Apr 09, 2014

Anastacio

Anastacio wrote:

I've used the heat from the sun, a cardboard thing I made, black colored paper and cook...
commented: Sat Feb 22, 2014

JennyD

JennyD wrote:

It's a good way to save
commented: Wed Sep 25, 2013

there are 5 more comments

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higuyswhat
i'm Palestine's side. i hate israel they are terrorists im antisemitism. 
reply 26 minutes
Boysrock50
No, I've done proper research unlike you it seems, Loads of the news is controlled by Israel such as BBC so is biased against Palestine anyway. You seem to insist that it is the Jews rightful homeland when it wasn't. The jews didn't have anywhere so they decided to invade Palestine many years ago and call it Israel, that doesn't make it their rightful homeland, does it? -.- And you can't expect to know everything about it if you just go to one side of the battle. Go to Palestine's side and you will see it is so much worse. But your too ignorant to think that and so you have a biased opinion. How do you expect Hamas to have ceasefire when they are trying to claim back their freedom. I'm not saying I agree with their methods but it isn't surprising really. And you do realise the tunnels are for supplies of clean water, medicine, etc   for the Palestinians as its the only way for them to get aid in seeing as though Israel has imprisoned them and is controlling everything that goes in and out. The Israeli's aren't even letting them have clean water! And most of these are innocent people! And even worse, Israel are targetting these tunnels so there is no way the Palestinians can get aid. No nation should have to put up with that!
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wishlist
wishlist posted in New Users:
Hi everyone,i'm a newbie here...nice to meet you all... even though we don't really meet hehe. Lets be friend :angel
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Tamia2013
Tamia2013 posted in Food:
Yes!! I mean who doesn't?
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None. I'm a vegetarian..
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