You will need a lemon, 18-gauge copper wire, paper clip, wire cutters and coarse sandpaper. Strip 2 inches of insulation from the end of the wire, and clip the bare wire exposed with cutters. Straighten the paper clip, and cut off about 2 inches. Use the sandpaper to smooth any rough edges on the ends of the wire. Gently squeeze the lemon without piercing the skin. Push the wire end and the paper clip end into the lemon about 1 inch apart but not touching. Finally, touch the tip of your tongue to the free ends of the wire and paper clip, and experience a slight electrical charge. It will feel like a small tingly sensation and taste rather metallic.
For this project, you will need about 5 feet of insulated copper wire, an iron nail, paper clips, and a D battery with holder or connector wires. Leave a slack of about 6 inches of copper wire, and then wrap it around the nail 25 times. Attach both ends of the loose wire to the battery, connecting one end to the positive connector and the other to the negative. Be careful not to leave both attached long, or the battery will be drained. Place the nail close to the paper clips. Disconnect either side of the wire from the battery, and then wrap the wire another 25 times around the nail. Try to move the nail near the paper clips again.
You will need a sheet of clear plastic, a piece of wool material, four supports such as tuna cans, an 11- by 17-inch piece of white paper, small objects such as cereal, plastic-foam popcorn, glitter, rice or such small materials. Place the paper on a table top, place the support cans atop the paper and scatter the small bits of material, then put the plastic sheet on top of those. Charge the plastic with static electricity by rubbing it vigorously with the wool material. Watch the small bits begin to dance and jump. When you rub the plastic with the wool, the cloth transfers negative charges to the plastic. The negative charges polarize the small bits of material and attract the positive charges to the tops of the bits while the negative charges push to the bottoms of the bits. The charges repel each other ,causing jumping.
Gather a C battery, a 4- by 12-inch piece of foil and a flashlight bulb. Fold the foil to make it 12 inches long by 1/2-inch wide. Set the battery on one end of the foil, then hold the metal base of the bulb to the other end of the battery, and touch the metal base of the bulb to the foil strip. The bulb will light up because the foil created a path for the energy to flow from the battery to the bulb.