Communication: Critical and Reflective Thinking

I can analyze evidence to make judgements. An example of how I demonstrated this core competency was during the “Pop Can Race” in my Science 9 class. This lab was during our Static Electricity unit. We learned that when an object is charged by another object, the electrons move from one object to another through friction. I realized that if I rubbed a balloon on my hair, the electrons would jump from one object to another. The charged balloon allowed us to help drag the pop can around the track. We realized that metal is a good conductor. The key to getting the pop can to move around the race track was that you need objects that have opposite charges to attract each other. We found out very quickly that you could only pull the pop can. You could not push it. The balloon was the positive charge and the pop can was the negative charge. The pop can could also be neutral for this to work. By analyzing the evidence during our experiment, I was able to make judgements as to how this could be done successfully.