# Growing Pains at Modern Office Supply, homework help

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Science

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Hi! So, everything's in the attached files, except for number 26. Thanks for the project, I hope to work with you again. All the best! 😊

DIY : Make and Use a Barometer to Measure Air Pressure
Theory
This DIY barometer works by comparing the density of the air inside the jar, and
the air outside the jar. When the air inside the jar is heavier than that outside the jar (air in the
surroundings), the air inside the jar will expand, causing the balloon covering the jar to inflate.
The straw attached to the balloon will then point to a number in the lower part of the scale. This
indicates a weather condition with a high chance of rain. When the air outside the jar is heavier
than that inside the jar, the weight of this atmospheric air will push the stretched balloon
downwards causing the air in the jar to compress and the attached straw to point to a higher number
on the scale, which indicates less chance of rain and a sunnier weather condition.

Data
Date

Time (1)

April 29, 2017 9:00 AM
April 30, 2017 10:00 AM
May 1, 2017
May 2, 2017

Weather Conditions

Partly Cloudy
Cloudy
Cloudy with presence
9:00 AM
of Fog
Sunny, Slightly
9:30 AM
Cloudy

Air
Pressure

Time (2)

Weather Conditions

Air
Pressure

1
1

5:00 PM
4:30 PM

Partly Cloudy
Slightly Cloudy

2
2

2

4:00 PM

Partly Sunny

3

4

4:30 PM

Partly Sunny

4

Barometer Analysis
1. With the barometer, we were trying to determine the difference of the pressure of the air
inside and the air outside the jar.
2. Yes. Over the four-day period, the weather conditions changed from partly cloudy to sunny
and slightly cloudy in the morning, and from partly cloudy to partly sunny in the afternoon.
3. The barometer measurement changed as the weather changed. When the weather
conditions showed a sunnier day, the barometer had a higher reading. When the weather
condition was cloudier, or in the case of May 1st, when the weather condition was foggy,

### Review

Anonymous
Just the thing I needed, saved me a lot of time.

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