Day 41 Investigation 8 part 1 Air Pressure Inquiry.
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Transcript of Day 41 Investigation 8 part 1 Air Pressure Inquiry.
![Page 1: Day 41 Investigation 8 part 1 Air Pressure Inquiry.](https://reader035.fdocuments.us/reader035/viewer/2022070605/5a4d1ae17f8b9ab059977433/html5/thumbnails/1.jpg)
Day 41
Investigation 8 part 1Air Pressure Inquiry
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Arrows
Visualization Exercise 8.1
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Resources, P. 49
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Labels and Connection to text
Visualization Exercise 8.2
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Resources, P. 50
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Resources, P. 50
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Reading
• Starting on page 48 of your resource book read “What is Air Pressure”
• Answer the “Think Questions” on page 52.
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Barometer
• Measures air pressure
• Baro- means pressure
• -meter- means measure
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Aneroid Barometer
• How does an aneroid barometer work?–As pressure changes, a spring will coil and uncoil
and give us a reading in millibars
• What is the advantage?–Small and compact
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Mercury Barometer
• Long glass tube filled with mercury, placed in a dish of mercury
• Force of air on the surface of mercury pushes the column of mercury up the tube
• Although mercury is very toxic, what is the advantage?– Very accurate
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Units• Bars
– Used to measure air pressure– Equal to the pressure exerted by air
in the atmosphere at sea level
• Millibar (mb)– Unit used to measure atmospheric
pressure– 1/1000 of a bar– average sea-level air pressure = 1013
mb
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Response Sheet-Air Pressure and Wind
• Pull out page 47 of your lab book and answer the question.