Determining witch food – lemon, potato, cookie – would generate electricity

First Name:	Anna
Age:	7
Experiment Title:	Determining witch food – lemon, potato, cookie – would generate electricity
What was the purpose of your experiment? Provide a brief description of what you were hoping to learn, discover, or study.:	The purpose of my experiment was to determine witch food – lemon, potato, cookie – would generate the enough electricity to power a clock.
What was your hypothesis?:	My hypothesis was that the lemon and potato would have enough electricity to power the clock. I did not think the cookie would have any electricity, at least not enough electricity to power the clock.
What materials did you use in your experiment? List them all.:	I used: 1. lemon 2. cookie 3. potato 4. forks 5. wires 6. tray 7. zinc strips 8. clock 8. knife
What procedure was followed? Provide a brief description of the steps you followed during your experiment.:	I cut the lemon, potato, and cookie in half with my knife.Then I stuck the 2 forks in opposite halves of the lemon. Next, I stuck the zinc strips in opposite halves of the lemon. Then I attached the clock wires: 1 to the fork, 1 to the opposite side zinc strip. Then I used the white wire to attach the remaining fork to the remaining zinc strip. Then repeat these steps with the potato and the cookie.
What were the results of your experiment?:	The results were the lemon worked the best, potato was 2nd and the cookie didn’t work at all.
What is your conclusion after conducting the experiment? Was your hypothesis correct or incorrect? What did you learn?:	My hypotheses were completely correct. I learned that you can use a lemon as a battery. Before today, I thought only potatoes would work. In my hypothesis, I said lemons would work because on the box there was a picture of the lemon working. But now I know that lemons work better than potatoes.