Qustion 1 - 12

1. Touch two metal contacts to make the ball flash.
2. To create a complete electric circuit
3. The ball will not flash. It needs a conductor, and it will flash only when the two materials that works as the conductor connects forming a complete circuit. 
4. The materials we tested are metal, and human body. Both of them could work as conductor.
5. When the body is not attached to the metal contacts which means covered by something such as clothing.
6. We can make the energy ball work with all people as long as a complete circuit is established.
7. A series circuit
8. We could make both ball light up in either a series circuit or a parallel circuit.
9. If two balls are in one circuit when on person disconnects with the other, the balls will not light up. If there are two circuits when on person disconnects in a circuit, the other circuit still operates.
10. In a series circuit, no.
12. 4 people.