The Elites

1
The Elites
Credit goes to
Megan Gritzfeld Mr. Box Mr. Briber (mentor) Mr.
Kliewer Mr. McDougal Mrs. McDougal Mrs.
Silver Nick Holland Tye Barba And nameless angels

• Alex Brush
• Brandon Stiles
• Erick Box
• Reihia Todd
• Theodore McDougal

2
Purpose

• Purpose To test our PowerAde bottle device to
  contain air pressure and be able to confirm a
  pressure drop with increase of altitude.

Hypothesis
Our teams hypothesis is that the air pressure
within the bottle will equalize to the outside
air pressure as the altitude increases.
3
Procedure

• First we went through our checklist in which we
  made sure that every component was in place and
  we had all of our equipment ready for use. We
  then sent up our balloon on a kite reel. After
  waiting for ten minutes we brought the balloon
  down to make a measurement on the air pressure.
  We had failed to open the valve before launching,
  causing us to re-launch. Again we had another
  error which caused us to re-launch.

4
Problems
Problems Fixed

• We had added four more balloons and one large
  helium filled balloon to give it enough lift.
• We opened the one-way valve.
• We solved the last problem by collecting data
  from other people to complete our experiment.

• Our two toy balloons did not have enough lift to
  carry our experiment.
• SOMEONE didnt open the one-way valve.
• SOMEONE let the air pressure in the bottle
  equalize at ground level when they were not
  concentrating on their job.

5
Pressure Temperature Test

• Ideal Gas Law- PVnRT
• Pressure VolumeConstantTemperature
• To prove that our air pressure bottle worked we
  performed a test using the Ideal Gas Law.
• P(initial)The Bottles Pressure was103kpa at
  temperature of approx. 373K (bottle in boiling
  water).
• P(final)87.5kpa at a temperature of approx. 290K
  (room temperature).
• Calculated pressure change -20kpa over this temp.
  drop. Actual difference was -15.5kpa.
• This agrees within 22.5 of our calculation.

6
Test of Bottle Result
Seconds Pressure (kpa)