1. Balloon Fest 2007 Team Airheads Kyle Austin Chris Jacober Zac Heaston Brandon Stegall Alex Ramos

2. Procedure  Set up and program the Labpro.  Set up the gondola to carry the Labpro.  Fill the Balloon.  Make sure the opening is completely sealed.  Attach the gondola to the balloon.  Use the labpro to measure the pressure.  Analyze the data.  In our experiment we will be measuring pressure.  We will use a barometer and shaving cream.  The shaving cream will expand as the pressure decreases.

3. Predicted Problems  We may have trouble with the labpro.  We would have trouble with time.  The wind would cause the balloon to tilt at an angle when collecting our data.  The shaving cream may not expand enough to be measured.

4. Expected results  We expect to have the shaving cream’s volume increase at the same rate the pressure decreased  We also expect that we would get the shaving cream into the tube easily and that It would not matter if it was level  We thought that there would be enough time to do all our tests without rush  There was only enough time to get 3 tests in instead of the 5 we wanted

5. Results  The highest pressure was 99.104 kPa. The lowest pressure was 96.581 kPa  From o to 800 feet there was a 2.6%decrease in pressure The shaving cream did expand but very little. Approximately 10% from 0 to 200 feet. The shaving cream increased 20% from 0 to 800 feet. This shows that the rate at which the pressure changes is not linear

6. Discovered Problems  The heat dried the shaving cream  The shaving cream was messy and the threw off the results  The wind changed the altitue and the string was heavy which also affected it.  The balloon string got tangled with other balloon strings  We had little time due to sharing the labpro with other groups.  Balloon didn’t have enough lift.