Let’s see how much you’ve picked up with these experiments and the reading – answer as best as you can. (No peeking at the answers until you’re done!) Just relax and see what jumps to mind when you read the question. You can also print these out and jot down your answers in your science notebook.


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  1. What are three different sources of alternative energy?
  2. What’s the difference between alternative and renewable energy?
  3. What is power a measure of?
  4. What is energy?
  5. How does a solar cell work?
  6. Where does the power from a crystal radio come from?
  7. How does a wind turbine create electricity?
  8. Is a motor and generator the same thing?
  9. Does the water molecule give energy when you split it apart?
  10. Would you get more energy from splitting an atom or a proton?
  11. How can a car be powered by only sunlight and water?

Need answers?

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