This lab is designed to help students understand how wavelengths of light are absorbed and reflected by chlorophyll. Students are given a hypothetical experimental design and raw data and asked to fill in the missing parts of the scientific method and to graph and interpret the data.
Students construct a hypothesis and prediction, graph data, compare it to the visible spectrum, and analyze the data by constructing a concluding statement and answering analysis questions.
The data was taken from the online activity 7.2 of Prentice Hall Biology. I liked the concept of the activity, but my students had difficulty with the directions. The file includes a graphing sheet set up with just enough squares either direction for the scale as well as a bar for coloring the visible spectrum.
I use this lab at the beginning of the photosynthesis unit, after introducing pigments and before discussing the light reactions. It also makes a good assignment to leave for a substitute.
Effects of Wavelength on Rate of Photosynthesis Lab by Nicole Gruber Koller is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License