This passage describes the variables that affect the percentage of incident light that undergoes reflection and transmission at the boundary between two materials. The passage uses a diagram, a table and two graphs to describe the relationships among variables. Questions target a student's ability to identify the effect of one variable on another variable, to select information from two or more data presentations, to make a prediction based on two or more data presentations, to interpolate and extrapolate from a graph, to compare data chosen from two or more graphs, and to use known data to make a prediction regarding an untested scenario.