When I went biking with my brother this weekend, we went up a hill at one point. It was a high hill, so we were building up potential energy as we went up. Once we got to the top, there was another hill. So we dropped down and that used kinetic energy.

Energy is something that you can have in your body or something that can power things.  Energy in your body can make you go fast, or it can be used to power a light bulb. Energy can be the build up of a roller coaster or the drop. There are two kinds of energy, kinetic and potential.