Think about the Investigative Phenomenon Video you watched. What was the science behind the phenomenon you observed? To help you build an understanding of the phenomenon, you will model it. A model is a tool that scientists use to represent an idea, object, or system (or parts of a system). Often, models are visual or physical representations, but they can also be mathematical representations or analogies. In this activity, you will make a visual model in the form of a drawing or diagram.