I know that Niagara Falls (for example) produces a huge amount of energy, which we use for various…things that need energy. 🙂 And I assume “use” also includes capturing it somehow, as well as storage and transport. But how does that work? What do we actually do to accomplish all that?
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To understand energy you must understand the concept of work.
Work is a force applied on an object that causes it to move. For example, if I push with 1 newton of force on a object and cause it to move 1 meter, I have done work.
Energy is a quantity associated with work. In the above example, there is 1 Joule of energy. It took 1 joule of energy to push on the object with 1 Newton of force for 1 meter.
Energy cannot be created or destroyed but it can be changed into many forms.
We can never use 100 percent of energy for useful work.
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