QUESTION 1
Q1 (Content from L1 pg. 1) The atmosphere is a compressible fluid that is pulled to Earth's surface by gravity. As a result, the molecules that make up the atmosphere are most compressed close to Earth's surface. So, given this information, atmospheric density is greatest at which one: Earth's surface or with increasing height?
		Greatest density at the Earth's surface
		Greatest density with increasing height
1 points

QUESTION 2

Q2 (L1:1) Indicate the percentage of the atmosphere above at each height in Table 1-1 of the lab manual by using the rule: for every 5.6 km you ascend, there is half the atmospheric mass above you as when you started.  Find the Percent Above at 5.6km.  Hint: You start at 100% and sea level; you ascend 5.6 km so what is half of your starting percentage?


50%


6.25%


2.8%

1 points

QUESTION 3

Q3 (L1:1) Using the rule, indicate the percentage of the atmosphere above at each height in Table 1-1. Percent Above at 11.2km.  Hint: You need to divide by 2 the percentage you found for Q2 since that is your new starting height and you are again ascending 5.6 km (5.6 + 5.6 = 11.2)


12.5%


5.6%


25%

1 points

QUESTION 4

Q4 (L1:1) Using the rule, indicate the percentage of the atmosphere above at each height in Table 1-1. Percent Above at 16.8km


8.4%


12.5%


25%

1 points

QUESTION 5

Q5 (L1:1) Using the rule, indicate the percentage of the atmosphere above at each height in Table 1-1. Percent Above at 22.4km


6.25%


50%


11.2%

1 points

QUESTION 6

Q6 (L1:4) Using either the equation in the lab manual or the graph (provided in the pdf notes), estimate the percentage of the atmosphere above and the total pressure for the height indicated below. The height of a cruising jet (11.2km) ________% above and ________mb


12.5% and 1000mb


25% and 250mb


5.6% and 175mb

2 points

QUESTION 7

Q7 (L1:4) Using either the equation or the graph (provided in the pdf notes), estimate the percentage of the atmosphere above and the total pressure for the height indicated below. The top of Pike's Peak (4.34km) ________% above and ________mb


2.17% and 250


25% and 650mb


58.4% and 584mb

2 points

QUESTION 8

Q8 (L1:5) What is the approximate partial pressure of oxygen at sea level? Make sure to read the paragraph before question 5 in the lab manual.  Also, oxygen makes up 21% of the atmosphere's volume.  (Hint: 1000mb is the approximate pressure exerted at sea level)


21mb


210mb


48mb


250mb

1 points

QUESTION 9

Q9 (L1:6) What is the partial pressure and percentage of sea-level OXYGEN at the top of Pike's Peak?  Hint: Use the millibars (mb) you found for Pike's Peak in Q7.


123mb and 58.4%


12.2mb and 50%


434mb and 90%

1 points

QUESTION 10
Q10 (L1:6) What is the partial pressure and percentage of sea-level OXYGEN at the top of mt. Everest? (hint: see the example in the manual for the pressure reading you need to calculate the partial pressure)
		885mb and 25%
		330mb and 88%
		69mb and 33%

1 points

QUESTION 11

Q11 (Content in L1) What are the four layers of the atmosphere?  Choose 4 answers.


stratosphere


troposphere


lithosphere


mesosphere


asthenosphere


thermosphere

4 points

QUESTION 12
Q12 (L1:7) True or False: The absorption of solar radiation by ozone in the stratosphere leads to warming in the stratosphere.
 True

 False

1 points

QUESTION 13

Q13 (Content from L1 pg. 4) The top (end) of each layer of the atmosphere has a specific name. What are the 3 end layer names?  Choose 3 answers


Tropopause


Lithopause


Mesopause


Stratopause


Asthenopause

1 points

QUESTION 14
Q14 (L1:12) The tropopause marks the top of the troposphere and is defined as the level where temperature ceases to decrease with height. Using the graph from pg 5 (completed graph found in the notes) what is the tropopause height and temperature at Key West?
		10,000m and ~ -53C
		13,000m and ~ -58C
		16,000m and ~ -75C
1 points

QUESTION 15
Q15 (L1:12) The tropopause marks the top of the troposphere and is defined as the level where temperature ceases to decrease with height. Using the graph from pg 5 (completed graph found in the notes) what is the tropopause height and temperature at Fairbanks?
		10,000m and ~ -53C
		13,000m and ~ -58C
		16,000m and ~ -75C
1 points

QUESTION 16
Q16 (L1:13) The relationship between average tropospheric temperature and the height of the tropopause is that: The greater the average temperature, the higher the tropopause. Also, vertical mixing of air is responsible for a thicker troposphere. With this understanding is vertical mixing greater when the temperature is warmer or colder?
		Warmer
		Colder
1 points

QUESTION 17

Q17 (Content from L1 pg. 3) You probably know (either from experience or hearing about it) that as you increase your elevation (altitude) that it is harder to breathe. Given what you learned in this lab, is it harder to breathe because there are more air molecues or because there are less?


More air molecules


Less air molecules

1 points

QUESTION 18

Q18 (L1:Content from notes)  What is the situation called when temperatures increase with height in the troposphere?


temperature profile


temperature inversion


temperature fold

1 points

QUESTION 19

Q19 (L1:26) Use the completed graph from Table 1-3 (found in the notes) to answer the question.  Over the past 50 years have general CO2 concentrations increased, decreased, or remain the same?


Increased


Decreased


Remain the same

1 points

QUESTION 20

Q20 (L1:28)  Use the completed graph (found in the notes) from Table 1-4 to answer the question.  On the graph CO2 reaches its peak concentration in April/May.  Why would the increase peak then?


CO2 has been absorbed or taken up all winter long by growing vegetation.


CO2 has been released all winter long due to leaf decay and the spring green-up period (CO2 being absorbed or taken up by growing vegetation) has not occurred yet.