All Science Fair Projects

Supplies:

Pliers BIC Pen Thumbtack Pie Pan Styrofoam Plate Hot Glue

 

Making Sparks   In this experiment we'll create an object called a electrophorus.  Use the pliers to remove the pen cartridge from the insides of the BIC pen.  This will be our 'handle'. Place the pie pan upside down on the table. Push a thumbtack down through the center of the pie pan. Turn the pan back over so you are looking at the inside of the pan.  The point of the thumbtack should be sticking up through the middle of the pan. Coat the thumbtack point with hot glue.  Reeko's sure you figured out that the word 'hot glue' comes from the fact that the glue is HOT!  So be careful. Push the bottom of pen body down onto the extending thumbtack point.  You could also use a pencil for this step and press the eraser end of the pencil down onto the thumbtack. Let the glue dry for a little while.  Rub the styrofoam plate with the wool rag for about 45 seconds. Place a styrofoam plate upside down on the table. Using the pen 'handle' that we just created, place the pie pan on top of the upside down styrofoam plate (the pen should be sticking up). Quickly touch the pie pan with your finger.  It may produce a small shock. Remove the pie pan off of the styrofoam plate using the pen 'handle'. Discharge the 'charged' pie pan by touching it with your finger.  If you feel mildly unpleasant about the small electrical shock then use Dad as the discharge object.   Foreheads and ears make good targets - just make sure you have an escape route planned beforehand. Pretty cool, huh?  You can recharge the pan by starting at step 8.  After Dad has seen (or felt) the results of this experiment, feel free to have a little fun and chase him around the room with your newly built zapper. So what have we learned here (besides the fact that Dad's can indeed glow in the dark)?   Rubbing the styrofoam plate with the wool rag creates a negative charge on the plate (that is, it attracts electrons from the wool). induction). Now, by carrying this contraption by the insulated handle (the pen), you can carry a positive charge all around the room.  When you bring this positive charge near your finger, or any other object that is a source of electrons, the positively charged pan will attract electrons, creating a spark.  Parent's Note. Although an atom is normally electrically neutral, it can lose or gain a few electrons in some chemical reactions or in a collision with an electron or another atom. This gain or loss of electrons produces an electrically charged atom called an ion. An atom that loses electrons becomes a positive ion, and an atom that gains electrons becomes a negative ion. The gain or loss of electrons is called ionization.