Elements of Harmony Devon Holze, Shelby Havel, and Cheyenne Longman
Our Design • Purpose: to see if the cricket’s activity level changes with height • Equipment: • Terrarium with crickets • Camera • Logger Pro • O2 sensor
What we expect! • We think that they will move less when they are higher • Due to lowered oxygen levels and increased motion of the gondola • We graded the movement levels on a scale of leg movements per minute • 0-10=extremely slow, 11-20=slow • 21-35=moderate, 36 and up-fast
How they did on the ground/air • At ground level=fast pace of 42 leg movements • In the air=rate of approximately 38 leg movements. • the smaller ones immobilized • larger crickets had a slower pace • Higher balloon=less movement
What happened? Here is the graph of our trial run with the O2 sensor because our labpro did not record our data.
Data Analysis! • Oxygen decreased as the gondola rose, and increased as the gondola dropped • Low point of oxygen levels=2.75% • High point of oxygen levels=3.25% We found that our crickets moved around approximately 38 leg movements
Error analysis • Labpro did not connect to our computer or anyone else’s computer anytime we tried it. • Small knots in our string that shortened it by 3 inches at most. • Length of rope attached to the balloon was off slightly due to slack and positioning of the stabilizer. Only 2-3 feet at most.
Conclusion • Although our oxygen did not turn out well, we have concluded from our previous data that the oxygen would have steadily gone down from the base oxygen level we got of 18.86% to somewhere in the low teens such as 13 or 14%. • Our hypothesis was correct, the crickets did move less with higher altitude.
Thanks • Thanks to Ryan Frank for letting us use his camera. • Thanks to the lady at “The Pet Department” for her help deciding on the crickets we will use. • Thanks to Ms. B for being a great support and having the patience to deal with us… And unknotting our string. • Thanks to Tiffany Pineda for being so patient and letting us use her computer.