Wonders of the battery

Energy is a really amazing thing, and there was always this empty part of my mind waiting to be filled in on how it all works.  How does a battery really transfer energy to a device?  Well, after watching an educational film in class, I came to a better understanding of how the transfer of energy works.

Simply enough, this is all done with the transfer of electrons.  These negative electrons are like trucks that are given load at a source (ex. batteries) and they must carry the source to it's destination (light bulb).  The electrons would start off from the negative terminal of a battery and move throughout the circuit by conductors, back to the positive terminal and so on. Now, this is called "electron flow".  Technically, "conventional current" is also valid thought it travels the opposite direction (positive to negative) as electronic flow as long as it is consistent.