Question 1-12 of energy ball

1.Can you make the energy ball work? What do you think makes the ball flash and hum?
   Yes we can make the energy ball work.  We touch both metal contacts complete the circuit, there is     current go though the energy ball, so the ball can flash and hum.
2. Why do you have to touch both metal contacts to make the ball work?
   We have to touch both metal contacts to complete the circuit, make the ball work.
3. Will the ball light up if you connect the contacts with any material?
    No, the ball will not light up with any material except conductors such as metal and water...
4.Which materials will make the energy ball work?
  Conductors, for example, metal, water, ourselves...
5.This ball does not work on certain individual, what could cause this to happen?
  When the skin is very dry this ball does not work.
6.Can you make the energy ball work with 5-6 individuals in your group? Will it work with the entire class?
   Yes, and it works with the entire class.
7.What kind of a circuit can you form with one energy ball?
   I can form simple circuit with one energy ball.
8.Given two balls, can you create a circuit where both balls light up?
  Yes we can.
9.What do you think will happen if one person lets go of the other person's hand and why?
   The ball will not light up, because the circuit is opened, no current go though the energy ball.
10.Does it matter who let's go?

     No, it does not matter
11.Can you create a circuit where only one ball lights up (both balls must be included in the circuit)？
    Yes, form a series circuit.
12.What is the minimum number of people required to complete this?
    At least five people required to complete this.