Have students suggest reasons for results. Have students read about global warming. Have students relate their results to global warming. Discussion Have students summarize the factors that contribute to global warming. Introduce the terms greenhouse effect, photosynthesis, and heat absorption.
Evaluation Have students list factors that contribute to global warming.
Use the rubric to assess the experimental design and the group report. Extension Complete activity, Plotting CO 2 and Temperature Design experiments to determine how different colors, types of soil, and vegetation affect the heating of the atmosphere. Use the Internet to investigate the effects of global warming on the global climate change. How the Weather Works . Inc. Pleasantville, New York.