Big question - Big question -

• Which fruit and vegetable conducts the most electricity ?

Hypothesis -Hypothesis -

• Fruits - a green apple because it is round, acidic and fat.

• Vegetable - a lemon because it is sour and has lots of acid in it .

Interesting facts Interesting facts

• A lemon can only produce about only one milliamp.

• A tingle felt on your tongue is due to the movements of electrons.

• If you connect two lemons it can power a expensive watch.

• Electrons are collected at one side and lost at the same time .

• A lemon battery is called a voltaic battery.

Experiment -Experiment -

• Materials –• Lemons • Green apple• One galvanized nail • Penny/Copper wire• Four alligator clips • A holiday light that has a five centimeter

light connected.

Detailed step by step instructions Detailed step by step instructions for vegetable -for vegetable -

• First take a lemon and roll it gently on a table to get its inside mashed up without breaking its skin

• Then take a galvanized nail and a penny or copper wire and stick it into the lemon .

• After that remove the insulation from the holiday light .

• Finally wrap the wire around the nail and penny or copper wire and use alligator clips to keep it on.

Detailed step by step instructions Detailed step by step instructions for vegetable -for vegetable -

Step by step instructions for fruit -Step by step instructions for fruit -

• First take a green apple and roll it gently on a table to get its inside mashed up without breaking its skin

• Then take a galvanized nail and a penny or copper wire and stick it into the green apple .

• After that remove the insulation from the holiday light .• Finally wrap the wire around the nail and penny or

copper wire and use alligator clips to keep it on.• I repeated the experiment using orange instead of apple.

Control/variables -Control/variables -

• I would like to add a multimeter and measure the volt of a lemon, grapefruit and orange and then try to light the light bulb .

• I would also like to take out the green apple because it does not have enough juice to conduct electricity .

Observations -Observations -

• When I used one lemon I could fell a light tingling sensation but with two lemons it was a little stronger . When I used the three lemons the light lighted up a little.

Data -Data -

• With one lemon the light bulb would not light up but I could feel a tingling sensation.

• With two lemons light still did not light up but could feel electrons on my tongue .

• With one green apple the light bulb would not light up but I could feel a tingling sensation.

•

Analysis of data -Analysis of data -

• Both a green apple and lemon did not conduct electricity required to light up a small bulb.

• The apple did not produce enough electrons as they were escaping.

• The lemon did not have enough current to power a bulb.

Conclusion -Conclusion -

• My hypothesis was correct to think that– A lemon conducts electricity– A green apple does not conduct electricity– An orange also conducts electricity

References -References -

• http;//www.reachoutmichigan.org/fun experiments/ages subject/lessons/energy/ lemon.html

• 101 science fair projects.