Barometer Lab

For this lab we used homemade barometer to measure the pressure in the atmosphere. The purpose of the lab was to determine the pressure changes according to the different changes in weather.

In order to make the barometer we cut a balloon's top off and stretched the remainder of the balloon over a glass bowl. Once this procedure was done we cut a straw at the top into a pointed tip in order to read what I was pointing at. Then this pointed straw was taped to the top of the balloon covered glass bowl. Using the graph below, the atmospheric pressure on a given day could be recorded.

Based on the picture above of the homemade barometer on this given day, the atmospheric pressure is .8 ATM.

Pressure (ATM)	Ruler Reading (mm)
0.80	5
0.85	10
0.90	15
0.95	20
1.00	25
1.05	30