Improvised Battery (Option 3)

1. Make a saltwater solution. Make the solution saturated.

2. Get two connecting wires. Attach charcoal in one end of each connecting wires. Then dip both of the charcoal to the saltwater solution.

3. Connect the other end of the connecting wires to the mechanical charger. Charge the connecting wire by rotating the handle.

4. After charging, disconnect the wire from the mechanical charger and connect it to the terminal of the electronic melody. If your battery is working, you will hear music from the electronic melody.

· Drinking cup

· Salt

· Water

· Connecting wires with alligator clips

· Hand Mechanical generator

· Charcoal

· Electronic Melody

PROCEDURE:

テキストボックス: VOCABULARY Saturated Solution— A solution in which the maximum amount of solvent has been dissolved. Any more solute added will sit as crystals on the bottom of the container. (http://groups.molbiosci.northwestern.edu) Terminal—A contact on an electrical device (such as battery) at which electric current enters or leaves).

テキストボックス: EXPERIMENT LISTS PHYSICS Balancing a Dragonfly Does Air Takes Up Space? Improvised Battery (Option 1) Improvised Battery (Option 2) Improvised Battery (Option 3) Tornado in the Bottle Diver Surface Tension and Air Pressure Aluminum Wrap Railway Light to Sound Magnetic field in 3D Simple Kaleidoscope Art in Polarizer Simple Spectroscope Electrostatic Motor Paper Earphone CHEMISTRY Vegetable/Fruit Charcoal Red Cabbage Extract (Identifying Acidity of a Liquid) Alkalinity of a Liquid Crayon Making Hand Printing using Soap Testing Raindrop Acidity using Red Sweet Potato Powder Magic! (Water doesn’t fall?) BIOLOGY 1. Leaves Puzzle ACTIVITIES Fossil Hunting Gold Sieving Smelting Steel Observing Classes Attending Trainings

Option 3

MATERIALS