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Ecology Fair University of Minnesota Monarch Lab

Abstracts from Cedar Park S.T.E.M. School 2008

Cedar Park S.T.E.M. School
7500 Whitney Drive
Apple Valley, MN 55124

Year: 2008
Teacher(s): Kelli Ellickson

Grasshopper Temperature Gradient Experiment

Claudia B, Brittany D, Dylan F, Donavin H, Akarshna I, Callie J, Carson K, Sean L, Aidan L, Victor L, Kevin L, Kayla M, Lindsey M, Nina M, Nneka N, Darrel R, Namita N

The purpose of this experiment is to test the effect of cooler temperature on grasshopper activity and movement. Students observed many grasshoppers sunning themselves on the side of our school building as fall temperatures began to drop. The question students posed: Does temperature play a role in where grasshoppers are found? Student Hypothesis: More grasshoppers will be found in sunnier locations in our gardens than shady ones. To test this notion students divided each of our 3 native habitats into four quadrants. They measured and recorded the temperatures in each of the four plots. A grasshopper population census was also taken for the four quadrants of the garden. After the data was collected and analyzed the experiment indicated there was indeed a correlation between sunnier, warmer locations and greater grasshopper populations. This confirmed the idea that cold-blooded animals cannot generate their own body heat, but they do regulate it by changing their environment.

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