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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.

General In The Forums

simran88
simran88 posted in Say Anything:
@AlphaT  You've posted on behalf of everyone else. In their style. XD Now no one needs to post. God bless you for ending a thread in which everyone would post the same opinion and say the same thing. XD
reply about 2 hours
ThePaleWalker636
I found the greatest riddle ever (credits to Ted-Ed), and I want to see if anyone can solve it without looking up the answer. THE RIDDLE OF THE ALIEN OVERLORDS. You and your team have crashed-landed on an ancient planet. The only way off is to appease its three alien overlords, TEE, EFF, and ARR, by giving them the correct artifacts. Unfortunately, you don't know who is who. From an inscription, you learn that you may ask three yes or no questions, each addresses to any one lord. Tee's answers are always true. Eff's answers are always false.  And Arr's answers are random. But, there's a problem. You've deciphered the language enough to ask any question, but you don't know which of the two words 'ozo' and 'ulu' means yes, and which means no. How can you still figure out which alien is which?
reply about 3 hours
CRCardinal
Fear: The Emotion of Death   You can't see me, But I'm there. I'm in your tears, I'm everywhere. I stalk you in your shadow, So stealthy and no slack. I'm made of dark matter, You better watch your back. You can hear me, I'm your beating heart. Inside is emptiness, Tearing you apart. You shiver and shake, At the sound of my name. I engulf you, drown you, Surround you with shame.   I've seen destruction, More than anyone. I'm darker than, The world with no sun. The agony arises, There's so much red. Most of it coming, From the dead. I become your shadow, I'm a terrible sight. And when you see me, You're frozen with fright. I'll grab you by your neck, You'll be thrashing around. You're crying, shrieking, Until there's no sound.   I feel so sad, So empty, so. . . Alone. So you'll feel the same, You'll be on your own. And as long as you are with me, At the point of no return. You will go crazy. You'll crash and burn.   Then you understand, With your slowing of breath. That I am Fear, The Emotion of Death.
reply about 5 hours
XxRuby_PhoenixxX
[Warning: Boring]     It all started on one night where I was doing a quiz on Playbuzz. They were fun, but my mom thought they were inappropriate. Searching the web, she found this site and saw it had quizzes on it. They weren't that fun, honestly. And this site? It was kidzworld. I forced her to let me make an account, and we did. No status. No bio. No mood. No picture. I swore to not go in chatroom or chat with people, because apparently they could be an old man in a basement. I nodded in agreement, saying that she could trust me. Of course, I did some quizzes and went off. That night, we went to bed of course. Now major time skip.    It's, let's say, three nights later. About midnight, and my iPod is next to me. I decided to go and check out "kids world". Clicking into "login", I guessed my password since I really forgot it. Score! Got it right. Anyways, I look around. Forums. Quizzes. Games. And then something spotted my eye.  Chatroom.  Clicking on it, I typed in these exact words.  "Hello?" And that's how my journey started. A few days later, maybe a week, I was introduced to the "boards". Clicking on it, I immediately saw the Roleplay section. Unknowing what it was, I created "Lemini The Witch" and got into an argument with someone who I will not name((*Cough* Gpc78 )). Anyways, I deleted the post. My first Roleplay I made was Crystal Heights. Noobish, stupid, horrible. But surprisingly, people joined. This is where my soon-to-be-best- friend, Ivy, entered my virtual life. And my other best friends. first message: "Are you going to post? We're waiting for you two lovebirds! ;)". Conversation continued. And continued. Our bond grew and grew, until we had reached 100 pages of private messages. 100. Pages. I couldn't believe it at first. 100 pages of messages with my soon-to-be-best-friend. As most of you know, a few months ago, I created several hundred opportunities for advanced roleplayers who were not acknowledged to go through the gates of Roleplaying Heaven. Including me. I helped them by creating the Top Ten Roleplayers, and "accidently" tagging every single advanced Roleplayer. Even Musicgenius showed up. This is a process in the soon to be made   "Roleplaying Council", which I am a part of. During this, me and Ivy were nearing 300 pages of private messages. Crystal Heights was over, but my life was going uphill, closer to opportunity. Even in real life, my hopes were flying closer to the clouds. A few months after this, my faith in the Lord started to fade. I am 10, I started to realize the true meaning of the Bible and what it's message was. I was stuck in the middle of what seemed like a tornado, being swept over to one side, but then jerked back to the other, while being hurt in the progress. I was tearing myself apart. That's went the tornado stopped. It was just rain. I was closer to finding out my true religion. And that was atheism. I felt like I had to have a religion, like something had to have created the universe. My heart was leaning towards Christianity, but my mind was going to atheism. Go with your mind, not your heart, was my instinct. Me and Ivy were nearing 500 pages of private messages. Little did we know that I would be deleting my account and coming back as Ruby Phoenix. As the days passed, my hatred for my user grew. I finally decided to message Jordan that "Please delete my account". I don't know if it was a good thing or bad mistake I did that, but it's too late now. After this,  I felt like my roleplaying creativity was fading away. My titles weren't original like my old ones. I had changed a lot.  And I mean a lot.  On Animal Jam, I was afraid of deleting a buddy. Now I do it without hesitation. I don't cry as much. Like a shell has grown around my emotions. Thanks to the internet, I've grown tougher.  A few months later, my days were, and are, gloomier. I was, and still am, always stressed about tomorrow. If I have too much work. If I can't do things right. If I mess up. If I do anything wrong. I am confused. Why am I here? Where do we go after we die? Why didn't I just continue to not exist? What is my purpose? What's my religion? So many questions for a 10 year old in my fizzing, overloading mind.    I just wanted to share this, just to. 
reply about 6 hours
ScoobysFriend
Listen closely.
reply about 7 hours