Energy Balls

On Friday we had an activity with energy balls, which are balls like light up when used correctly.


1) Can you make the energy ball work? What do you think makes the ball flash and hum?
Yes. Closing the circuit (by touching the two metal pieces) makes the ball light up.

2) Why do you have to touch both metal contacts to make the ball work?
Touching both metal contacts closes the circuit. If you only touch one, the electrons cannot move through the entire circuit, meaning it can't light up the light.

3) Will the ball light up if you connect the contacts with any material?
No, it wont. The material has to be a conductor or else it will not allow the electrons to flow through it.

4) Which materials will make the metal ball work?
Metal, mostly. Also, salt water and human flesh, of course. (:

5) This ball does not work on certain individuals--what could cause this to happen?
Probably the most likely reason is if they're severely dehydrated. If someone's skin is very dry, it would not allow the electrons to flow through very easily, thus not completing the circuit and not causing the ball to light up.

6) Can you make the energy ball work with all 5-6 individuals? Will it work with the entire class?
Yes. (: It will work with 5 people and with the entire class.

7) What kind of circuit can you form with one energy ball?
A simple circuit. There is the battery, and light, and a conductor.

8) Given 2 balls, can you create a circuit where both balls light up?
Yes you can by creating a series circuit.

9) What do you think will happen if one person lets go of the other person's hand and why?
Both balls will stop lighting up because the circuit has been opened.

10) Does it matter who lets go? Try it.
 No, it doesn't matter who lets go. Anyone who lets go will act as a open switch in a circuit and the ball(s) will not light up.

11) Can you create a circuit where only one ball lights up (both balls must me included in the circuit)?
Yes you can. This type of circuit is called a parallel circuit. (:

12) What is the minimum number of people required to complete this?
You can actually do it with one person, but the balls would have to be held somewhat awkwardly. It does work, though.