Potato clock science project

The zinc and copper ions would still react if they touched within the potato but they would only generate heat.

physics potato battery

Use another alligator clip to connect the nail in the other potato to the negative - terminal in the clock's battery compartment.

Rough galvanized nails work better than shiny, smooth galvanized nails because they have a thicker coating of zinc. If they do, the reaction will not have the desired effect.

Potato battery research

Connect the galvanized nail in the first potato with the copper wire in the second potato using the final set of leads. Scientists are always trying to discover clean energy sources to reduce pollution. Use the third alligator clip to connect the nail in potato one to the copper wire in potato two and set the clock! Use one alligator clip to connect the nail in potato number two to the negative - terminal in the clock's battery compartment. If they do, the reaction will not have the desired effect. Make sure the galvanized nails are really galvanized ask at the hardware store. As a result of this, positively charged zinc ions, and negatively charged electrons, are produced. Galvanized nails have been coated with zinc. Use the same precaution as in Step 5. Connect the remaining alligator clip lead between the nail in potato 1 and the copper wire in potato 2 [source: How to Make a Potato Clock ]. Most people aren't aware that this is possible, which is what makes it so interesting.

That's right, potatoes are nature's tastiest battery. Two potatoes can be connected together in order to double the voltage, the same way you join two batteries together to double the voltage. Insert one short piece of the copper wire into each potato as far away from the nail as possible.

Helmenstine holds a Ph. Who knew potatoes could be so empowering? Otherwise, you can find the materials for a potato clock in any hardware store.

An electrochemical cell converts chemical energy into electrical energy.

potato clock history

It creates the flow of electricity. The energy does not come from the potato itself. See what else your potato battery can power.

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3 Ways to Make a Potato Clock