Resource Blog-Balloon Morphing: How Gases Contract and Expand
Balloon Morphing: How Gases Contract and Expand Experimental Procedure Preparing for the Balloon Tests Blow up one of the balloons until it is quite full, but not close to popping, and tie it off. Mark the balloon with the number 1. Measure the circumference of this first balloon with the cloth tape measure, selecting the fullest part of the balloon to measure, as shown in Figure 1 on the right. Hold the tape measure snug on the balloon, but not so tight that the balloon is being squeezed by the tape measure and changing its shape. In your lab notebook, make a data table like Table 1, below, and record this starting circumference in millimeters (mm) in the data table. Figure 1. This drawing shows where to measure the circumference of the balloons. Blow up the second balloon so it looks about the size of the first balloon, but do not tie it off yet. Pinch the opening closed between your thumb and finger so the air can not escape. Have your helper measure the circumfere...