1. SEP Develop Models Use the space to create a model of the investigative
phenomenon. As you develop your model, consider the following:
• Why are fireworks different colors? What features of the atomic structure
might be part of the reasoning? How is light made or moved?
• Your model does not need to include every feature of the phenomenon.
Instead, focus on the features that you think are important for explaining
how or why the phenomenon occurs.

Use labels to identify and differentiate the components of your model.
.
Choose an appropriate scale for the model. If needed, label any specific
dimensions or measurements.