PacMan

1
Pac-Man

• Ryan Miller
• Alex Chaidez
• Hector Gutierrez
• Wesley True

2
Background Information

• As altitude increases, the outside pressure
  decreases.
• A one-way valve only lets air go inside, but does
  not let it out, or visa versa.

3
Our Experiment/Objective

• We have attached a gondola to a balloon filled
  with helium.
• Inside the gondola theres a jar which is going
  to trap a sample of the air every hundred feet.
• Then we are going to measure the pressure using
  Verniers Lab Pro and Logger Pro software.

4
Hypothesis
.

• Our hypothesis was that as the altitude increased
  the pressure outside the jar would decrease and
  the pressure inside the jar would stay constant.

5
Graph of our Data
Altitude (feet above ground level)
Altitude (feet from ground level)
6
Data Analysis

• The data deviates from the linear
  relationship. Possible Sources for deviation are
  
• If the wind blows into the valve it will increase
  the pressure, if it blows the other way it takes
  out some of the pressure.
• The height was being measured as the length of
  the rope, instead of the height of how high the
  balloon is from the ground level.
• Also the rope was not perfectly straight so the
  balloon could not have reached up to 1,000 feet.

7
Conclusion

• Our hypothesis was proven wrong because we
  thought that the pressure inside our jar would
  increase with the increase of altitude. The
  pressure inside the jar decreased just like the
  outside pressure.