Lab 5 Air Pressure Lab Online.docx - Name: Rachel Pitt GEOG...

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Name: Rachel PittGEOG 1005, Lab Exercise 5Spring Semester, 2016Atmospheric PressureThe atmosphere is a fragile envelope of gases that surrounds Earth and is held in place by gravity. Because itis a gas and because it is not uniformly heated, it is in constant motion, both horizontal (advection) and vertical(convection), and also because it is not uniformly heated, air pressure constantly changes at any given location.Atmospheric pressure is defined as the force exerted by the atmosphere on a surface. It is essentially the massor weight of the atmosphere above a given point. Therefore, as you ascend in altitude, the pressure decreases,because there is less atmosphere above you than there was when you were at a lower altitude. When we measureairpressure, we are measuring the mass or weight of the atmosphere.Because records are maintained over a protracted period of time, averages for pressure have been determined.Following are values for sea level in different units of measurement: 14.7 pounds per square inch (14.7 lb/in2),1,033grams per square centimeter (1,033 g/cm2), 29.92 inches of mercury (29.92 In Hg), 760 millimeters ofmercury (760mm Hg), 1,013.25 millibars (1,013.25 mb), or 1,013.25 hectopascals (1,013.25 hp). Which of theseunit is chosenis controlled by the system of units being used by the worker.Sometimes different systems of measurement get mixed together due to the equipment available, and that isthecase with this exercise. However, eventually all of the units must be converted into the same system. Thefinalanswer for the last part of this exercise will be in SI (metric) units.Part I Exercises:Normal sea level air pressure may be expresses as follows:29.92 inches of mercury, 760 mm of mercury, 1,013.2 millibars, 14.7 lb/in2, 1,033 g/cm2.

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Term
Spring
Professor
CF.Lohrengel
Tags
Atmosphere, Geography, Altimeter
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Calculus: Early Transcendental Functions
The document you are viewing contains questions related to this textbook.
Chapter 1 / Exercise 44
Calculus: Early Transcendental Functions
Edwards/Larson
Expert Verified

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