I read about electric currents and circuits. I discovered that “the circuit (the course through which the electricity flows from the battery) must be unbroken (closed) for it to work. If a circuit is broken (open), the current of electricity cannot flow through it.” (Drago & Meiani, p. 139).

I drew a picture of how I think the circuit on the Formula Fuelers works.

I also read about salt. Salt is made of sodium (Na) and chlorine (Cl). Sodium is a metal and “it shares certain characteristics with other metals.” (The Elements: Sodium, p.6). I also know that metals are good conductors of electricity.

I learned that a solution of water and salt is a good conductor of electricity, because the salt makes the water become a conductor.