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Biology, 18.05.2021 04:30 matthewsorrow02

Experiment: Barometer Option 3 Directions: Now that you have learned about a barometer, complete and submit the following
experiment. For this experiment, you will make your own barometer. Once completed, you may
photograph your barometer and submit that to your teacher.
Materials Needed:
A clear plastic drinking straw
A narrow-neck glass bottle
Enough modeling clay to fit in the neck of the bottle.
Instructions:
Fill the bottle about half full of water. Insert the drinking straw into the bottle, and make sure
the end of the straw is below the water level. Seal the neck of the bottle around the straw with
the modeling clay. Pour water into the straw to bring the water level in the straw above the top
of the bottle.
As the air pressure outside the bottle decreases, the trapped air inside the bottle will push the
water up the straw. As the air pressure outside the bottle increases, it will push the water
farther down the straw. Please note: You'll need to keep your barometer's temperature
constant, since temperature will also affect the water level.
I need help please!!!

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