Ward's World Activity Guides

Exoplanet Identification Demonstration

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+ ward ' s science 5100 West Henrietta Road • PO Box 92912 • Rochester, New York 14692-9012 • p: 800 962-2660 • wardsci.com Find materials for this activity at wardsci.com. Discover more free activities at wardsworld.wardsci.com Expected Results: Results may vary based on materials used, setup, procedure, and other factors, however, here are a few examples on what to expect: • Students should easily see changes in luminosity on the graphs from the probeware. • The graphs should be aligned at each distance recording. • From these graphs, students can calculate the frequency of the pendulum passes which would represent the "orbit" size. Follow-up Teaching Notes: • Comment – When conducting this experiment in a small space, either a very small pendulum or a bright light should be used. The pendulum should not be visible in front of the light. Add Inquiry: • Inquiry Idea 1—Increased Solar Activity – It is recommended that a fluorescent light not be used for the basic experiment. Because fluorescent lights cycle, the light meter would also record these cycles. Have students repeat the experiment using a fluorescent bulb and isolate the "Planet" • Inquiry idea 2—Multiple planets – Utilize multiple pendulums with different frequencies and ask students to determine how many "planets" there are Disposal/Clean-up: • There are no materials for disposal Exoplanet Identification Demonstration (continued)

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