1. Please describe what barometers are and the two types currently in use within

Question

1. Please describe what barometers are and the two types currently in use within the meteorological community?

2. What are the two ways to describe air pressure readings (units) and what is the sea level average for both?

3. Use the table (Weather Balloon) below to answer the following questions relating to weather data over Illinois on Sunday Oct. 27.

a. What is the relationship between air pressure and altitude readings?

b. Why are sea level pressure readings and station air pressure readings different?

c. What altitude is the 500 mb pressure reading found? 74560 ILX Lincoln Observations at 12Z 27 Oct 2013 ----------------------------------------------------------------------------- PRES HGHT TEMP DWPT RELH MIXR DRCT SKNT THTA THTE THTV hPa m C C %

74560 ILX Lincoln Observations at 12Z 27 Oct 2013

Source: 4. Please refer the scientific methodLinks to an external site. reading: Please address how the scientific method could be used to address issues relating to the factors related to the Ideal Gas Gas (Page 105 in your work) Use the observations from Lincoln, Illinois (above) and Key West, FL to verify how temperatures impact patterns associated with the Ideal Gas Law. Use the following steps to verify the following research question: Do temperatures impact air pressure readings? Clearly, I would assume you can identify that temperatures are warmer in Key West and this should impact air pressure readings. Will temperatures, which are warmer in southern Florida, increase or decrease air pressure values? Use the list below to address and structure a true scientific approach to addressing this question.

1Make observations (Review your chapter 4 readings 101-107 and associated videos for chapter 4) This step, in theory, is required in developing your knowledge to proposed a hypothesis. Again, I want you to focus on how temperature and density of air. Do warmer temperatures tend to lead to higher or lower air pressure at the surface of the earth? HIGHER 500 AND 850 MB HEIGHTS RELATE TO AIR EXPANDING AND BEING LESS DENSE AT THE SURFACE. Please answer the following questions 2. Make a specific statement or observation referencing how air reactions to temperatures with references to expanding or compressing air. In turn, what impact should these processes have on surface air pressure readings. Propose a NULL hypothesis.(Make a clear testable hypothesis statement relating how surface temperatures and air pressure are likely related) Example: The two classes have NO differences on test scores. Example 2: Air temperatures has _______ impact on surface and upper air level air readings. Hint: What word would you use to make example two a correct null hypothesis for this project?

3. Design and perform an experiment to test the hypothesis (Locate both the 850 mb and 500 mb values for both location. Please record the altitude for each location and graph the values using some sort Microsoft Excel graph option (line graph, histogram, or bar chart). The goal is to use proper labeling to clearly see which location (Illinois or Florida) have higher altitude readings. Higher altitude readings means air is expanding and producing low air pressure through producing lower density air. Higher air pressure readings for the same altitude, in theory, directly relate in lower air pressure readings due to air expanding at the surface of the earth. Use the attached file to help you complete this step: Copy of APLab2.xlsPreview the document Use this file which already the data input into an Excel spreadsheet. Highlight the cells with data and select the input menu to generate some sort of graph to capture the difference in the 850 and 500MB heights over Illinois and Key West.

4. Analyze your data to determine whether to accept or reject the hypothesis. Examine your graph and evaluate to accept or reject your hypothesis. Did your findings support your hypothesis (support or reject)? Make sure to reference your chart/graph when answering this step. Please attach your graph with your short answers 72201 KEY Key West Observations at 12Z 27 Oct 2013

Explanation / Answer

1. Barometers are instruments to measure pressure of the atmosphere or atmospheric pressure.

The two types of barometers used by the meteorological community are: Mercury Barometer and Aneroid Barometer.

2. The two ways to measure air pressure readings are:

p.s.i. or pounds per swaure inch

Pa or Pascal. 1 Pascal = 1 N/m2

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