1. Aakanksha

3. Can we help Captain Kirk power up his Communicator using lemons?

7.  A lemon  Penny  Zinc coated screws  Multimeter  2 alligator clips

8. 1. Insert penny & zinc coated screw into the lemon. 2. Connect 2 wires with alligator clips to the penny and the screw. 3. Connect the Multimeter to the other end of the two wires. 4. Measure the voltage

9. All batteries have a "+" and "-" side. The Lemon Battery in the picture shows Copper = positive (+) Zinc/Steel (eg. paper clip) = negative (–)

10. Yes, now we can help Captain Kirk get back to his spaceship ! Yippie!

11. 1.5 V + 1.5 V =

12. 1. Connect the penny of one lemon to the zinc screw of the next lemon. 2. Measure voltage. 3. Repeat to connect 3 lemons. 4. Measure voltage again. ( You should have one lemon with penny unconnected at one end and one lemon with zinc screw unconnected at the other end. )

13.  Use alligator clip to connect the lemon battery to the Digital Clock.  Positive side (lemon battery)  Positive side (Digital clock)  negative side (lemon battery)  negative side (Digital clock) Digital Clock

14.  http://www.hilaroad.com http://www.hilaroad.com  MiniScience.com MiniScience.com  http://en.wikipedia.org/wiki/ http://en.wikipedia.org/wiki/  http://www.energyquest.ca.gov http://www.energyquest.ca.gov  www.furryelephant.com www.furryelephant.com