A barometer is used to measure the pressure in the surrounding atmosphere. Such devices can be quite precise, complicated, and intricate. A barometer can also b made from simple household items and while it may not be the most precise instrument in the field, it can still provide insight into the changes in pressure at certain locations.
Making the barometer requires little more than putting a flexible membrane such as a balloon on the top of a fixed volume of air and taping a straw to the top which allows measurements to be taken as the below moves up and down according to the pressure.
Using data obtained from the pressure in the atmosphere and the subsequent height at the end of the straw, a graph can be plotted to show what resulting straw locations are produced from different pressures. The table of data and resulting plot are shown below.
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