ELECTRICITY GRID AND POWER POOL

Why is electricity the most convenient form of energy to use? It is clean. It can travel over long distances along wires. It can easily be changed into other forms…

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FOSSIL FUELS DEFINITION FOR KIDS

How old is a lump of coal? This sounds like a trick question, but it isn’t. Coal is millions of years old. Anthracite, the oldest and hardest coal, is 400…

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WHAT ARE CONDUCTORS AND INSULATORS?

Have you ever taken a spoon out of a mug of hot cocoa or tea or some other hot drink? Did you find that the spoon was too hot to…

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WORK AND ENERGY

Do you know that you are working when you are playing?To a scientist, work is any kind of action that uses energy.Energy is needed to do all types of work—for…

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WHAT IS ENERGY CONVERSION?

Every form of energy can change into another form of energy.Coal is a fuel that contains stored chemical energy. When coal burns, the chemical energy inside it changes into heat…

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ELECTROMAGNETIC ENERGY DEFINITION FOR KIDS

What do you think the air contains? It contains millions of tiny, fast-moving particles.Waves of energy pass through the air, too.This kind of energy, called electromagnetic energy, is made of…

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SOUND ENERGY DEFINITION FOR KIDS

Have you ever heard a jet airplane when it is getting ready to take off? The noise that the plane makes is sometimes so loud that you cannot hear any…

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