Lab 3
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Georgia State University *
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Geography
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Feb 20, 2024
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docx
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Lab 3 Questions
Q1: What are the two most abundant gases in both the stratosphere and troposphere?
Oxygen and Nitrogen.
Q2:
Compared to the other layers of the atmosphere, of what does the troposphere have high concentrations? Water Vapors and Particulates.
Q3: For the Earth as a whole, what
percentage
of the incoming solar radiation is reflected by clouds and other parts of the atmosphere?
You need to examine the figure above to find the numbers you will use when calculating the percentage. A percentage is a proportion multiplied by 100.
79%
Q4: For the Earth as a whole, what
percentage
of the incoming solar radiation is absorbed by the
atmosphere?
You need to examine the figure above to find the numbers you will use when calculating the percentage. A percentage is a proportion multiplied by 100. Also, you examined a major component of this absorption in the Stratospheric Ozone lab. 78%
Q5: What percent of the global atmosphere is
carbon dioxide (CO
2
)
?
Lab 5 and other subsequent labs have an emphasis on CO
2
. 0.039%
Q6: How do atmospheric pressure and density change with an increase in altitude? The atmospheric pressure decreases rapidly with an increase in altitude and so does the density.
Q7: Why do kicked footballs tend to travel farther at stadiums located at higher elevations? Less air means less resistance. Q8: Why do you think temperatures are higher at the surface than at the middle and upper portions of the troposphere? The temperature gets colder as you head up in the troposphere. The light from the sun heats up the bottom/ground. Q9: How would you describe the change in air density with an increase in altitude and how does that compare to what you learned in the previous sections? The density decreases as the altitude increases because of the decrease in the atmospheric pressure. Q10: Which gas had the largest proportional increase in mass when moving from the upper troposphere to the surface? Why?
Water Vapor because is concentrated near earth’s surface.
Q11: Why was your surface pressure higher or lower than the SLP of your location?
If your location is Falcon Field, then remember that the surface pressure was measured at 245 meters above sea level. Because of the altitude. Q12: Which region of Earth generally has the highest concentration of water vapor and which region generally has the lowest concentration?
The tropics have the highest concentration of water vapor. The poles have the lowest. Q13: Why would the distribution of water vapor change across the globe in the way that you identified in Q13? (i.e., Why would the region that had the highest concentration
be expected
to have the highest concentration and why would the region that had the lowest concentration
be expected
to have lowest concentration?)
Because of solar heat, water evaporates then turns into water vapor in the tropics. Water freezes and later turns into ice in the poles.
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