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  Energy and Work

Energy and Work

Potential & Kinetic Energy

Types of Energy

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Electrical Generation

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house under constructionEnergy is what we use to make things happen. Really, energy is the ability to do work. There are different types of energy, like heat, sound, electricity, and light. And energy can change from one kind to another. For example, a car changes chemical energy stored as a fossil fuel into heat energy, which runs the engine.

a cell dividingWork is what we do with energy. Work is when a force moves an object over a distance. Work is when matter is changed into another form or state. In other words, anytime we move something from one place to another, we are doing work. (Taking a book off a shelf.) Anytime an object is changing form, it is doing work. (A cell dividing into two, pictured at right.)


 

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