# Science Reasoning Center - Light

There were three Light passages in the Legacy version that targeted students' science reasoning abilities. They have each been converted to a Version 2 activity. We have included the links below:

This passage describes the conflict between two scientists regarding the dangers associated with cell phone radiation. The rationale behind each scientist's conclusions is described. Questions target a student's ability to comprehend the thrust of each argument, to compare and contrast the reasoning involved, to identify the assumptions that underlie the claims, and to predict the impact that future findings might have upon the ongoing debate.

Light Brightness
This passage uses two different tables to present information regarding the relationship between light intensity and the distance from the source and between light intensity and the power of the source at fixed distances from the source. A model for understanding the inverse square law is discussed. Questions target a student's ability to select data from a table (or two), to interpolate and extrapolate from information given in a table, to draw conclusions consistent with presented information, to identify the relationship among the variables, and to identify statements that are consistent with both the model and the data.

Shedding Light on Light Bulbs
This passage compares and contrasts four modern light bulb options. Information regarding the light bulbs, their color temperature and the connection to the colors and wavelengths of the ROYGBIV spectrum is presented using two tables and a figure. Questions target a student's ability to comprehend information presented in a body of text, to read from the tables, to relate information in one table to information in another table or a figure, and to combine information from two data presentations in order to identify valid conclusions.