PROBLEM: Where does static electricity occur?

PREDICTION:

EXPERIMENT 1.

1. Hold a plastic comb over confetti without rubbing the comb. What happens?
     
2. Rub a plastic comb with a piece of cloth. Hold the comb over a small pile of confetti. Did the comb "attract" or "repel" the confetti?
     
3. Rub the plastic rods, put it on the confetti. What happens?

EXPERIMENT 2.

1. Blow up a balloon. Without rubbing it, try and put the balloon on the wall. Does it work?   YES        NO
     
2. Blow up two balloons. Using a piece of cloth, both partners simultaneously rub their own balloon; one for 15 seconds and the other for 30 seconds. Quickly place both balloons on the wall and time how long each one stays up.
     
   Which balloon stayed up the longest?
     
   Why?

EXPERIMENT 3.

1. Rub a balloon to produce static electricity. Place one end of a fluorescent tube to the balloon. Describe what happens.

CONCLUSION: How can you create static electricity?