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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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alexiarina123
Hi, I'm Alexia----and I would like to encourage those who are in some difficult situations to keep pushing on.  In life there will always be negative situations and the most we could do is keep marching on when the heat of the sun is frying us...when the rain is beating hard against us.  But we can take the stones the enemy throws at us and build a structure...we can take the oceans of depression and learn to walk on water. Do not allow your emotions to rule  your life---if you allow this then life will be very similar to a rollercoaster( one minute your up...the other minute your down). Instead, you be the king/queen of your emotions----you rule it---don't let it rule you!. Your emotions can be false at times. Therefore, you rule it. When the harsh winds blow.......leave it.......it will only help the fire in you to grow! God bless :)  <3
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ValenciaRose
"Team Audi #46_1798243" wrote:*Clicks imaginary like button* and now there is one xD i remember this :3 
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AlphaT
AlphaT posted in Debating:
"ItsMyLife" wrote:Men just like to see women in their tight skirts, they only care about their bodies. Women are being used. =(Really?
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Not_So_Perfect_
March 1st
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blackheart05
Mzrch 22
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