ham radio light bulbs
Great and easy science project by creating a battery from a lemon.
Many people have heard of this, but do you know how to do this. It is actually quite easy. Any range of students can do this as a science fair experiment, however, young students will need to have their parents assistance to understand and perform the project correctly.
Here are the materials you will need.
4 lemons
4 pennies
4 galvanized nails
A Volt Meter
An Led Light bulb with two wires protruding from the bottom
A small knife
4 Small alligator clips from an electronics store such as Radio Shack
First we will make a battery with one of the fruit. Insert one of the nails in an end of a lemon and then cut a small slit with the knife in the other end big enough for a coin and insert the penny half way into the fruit. The galvanized nail with the acid in the lemon and the copper in the penny has now created a battery.
To test this use the volt meter and hold the positive end which is the red wire on the penny and the negative or black wire on the nail. It should read at least about one.
Now switch the red and black wires and you should see a negative result number on the reading.
Now remove this and create 3 more lemon batteries. Using the alligator clips attach the 4 piece of fruit together. You will connect a penny on one lemon to a nail on another and do that with the other two lemons. Now attach a clip to the remaining nail and the positive end wire of the LED light. The LED light has a flat edge by a wire. This should always be the negative side. Now clip remaining penny on another lemon and just touch the other wire of the LED light with the clip end. You should see a slight light. If you do not you may have hooked it up incorrectly so switch sides with the wires from the LED light and see if it works.
You will be able to present this project demonstration at your science fair.
Get more science project ideas and science projects at http://scienceprojects.fetching.us
Lesa Bolt is a contributor to http://scienceprojects.fetching.us
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