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Ever wondered exactly what energy is? Does it come from fire, electricity, the energy
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drinks we drink? Actually, it comes from all of those things!
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Energy is what keeps the world going. Let me break it down for you.
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The first thing you need to know is the law of conservation of energy.
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It sounds hard but it’s actually simple. It means that energy cannot be created or
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destroyed... ...but only converted between different forms.
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Yes, you heard it right! Energy lasts forever. I’m serious!
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It changes but never disappears entirely. So let’s look at some different forms of
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energy. There’s electrical energy...
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...which is the current that goes from your plug point...
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... all the way to your lamp and lights it up.
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Then there’s mechanical energy or what scientists call kinetic energy.
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That’s the energy of movement. Like when you walk across the road...
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...or when a car’s wheels turn. Oops.
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Well that was kinetic energy being transferred from the moving car to the pedestrian.
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But that’s a whole other lesson. Let’s look at some more forms of energy.
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Next, we have thermal energy. The biggest source is obviously the sun’s
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rays... ...but it’s also the heat that cooks your
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food. There’s also chemical energy...
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...which comes in the form of gasoline, oil and even the food we eat.
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Finally, there’s nuclear energy... ...which comes from the splitting of atoms...
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...like they do in nuclear power plants. Pretty cool, right?
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So now you know some of the basics about energy. We know it comes in many forms.
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Electrical, kinetic, thermal, chemical and nuclear.
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And don’t forget the most important part. Energy cannot be created or destroyed;
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it can only be converted between different forms.
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And that’s the basic of energy! It’s so simple!
