Purpose: Which  fruit will produce the most electric voltage?

Hypothesis: It will produce a very minimal voltage.

Reasoning: Because fruit/vegetables aren’t batteries, I wouldn’t be expecting much.

Materials: Fruit, Voltmeter, 2 wires, 2 different metals Copper (Cu) & Zinc (Zn), & a Knife… Wait a minute, the teacher handles the knife.

Procedure: Take the fruit or vegetable, cut it, then put the Copper strip & the Galvanized Nail in, connect it to the voltmeter & start recording data, try experimenting with different fruit/vegetable combinations to see what produces the most voltage. Hell! You could create a food battery tower!

Results: The potato emitted 0.7 volts, the tomato emitted 0.45 volts, & the carrot emitted 0.5 volts. When putting the carrot, the potato, & the tomato all in one, it produced 0.8 volts.

 

What was the independent variable, dependent variable, & the controlled variable?

-The controlled variable was the galvanized metal & the copper strip.

-The Independent variable would be the different types of fruit/vegetables used.

-The dependent variable would be the wires & the classic analogue voltmeter.

What is causing the electrons to flow?

The electrons are flowing because of the electrolytes in the fruit or vegetable.