What to do:
1. Put wire on one end of the dry cell and a light bulb to the other end.
2. Use another wire and put one end of it in the same bulb then attach
another end to the paper clip.
3. Put another wire to the end of the dry cell and attach the one end of the
wire to another paper clip.
4. Hang the two clips on the wooden skewers and hang it across glass A.
Make sure that the end part of the clips touches the water.
5. Do the same with glass B.
Guide What you need:
1 glass with salt water (glass A)
1 glass with tap water (glass B)
2 wooden skewers
4 big metal paper clips
2 dry cells
2 small light bulbs
Electrical wire (copper wire