Using the analemma, answer the following questions: Click this link to access an
ID: 286123 • Letter: U
Question
Using the analemma, answer the following questions:
Click this link to access analemma:
http://www06.homepage.villanova.edu/timothy.feeman/cartography/textsupp/supp01.htm
1. Determine the rate of change of the declination of the Sun during the following 10-day periods. Since the angular change will be relatively small, convert the number of degrees of declination change into the number of “minutes” of change (remember, there are 60 minutes in one degree). Keep in mind that you are calculating angular change, not time change.
Period
Beginning Declination (to the nearest ½ degree)
Ending Declination (to the nearest ½ degree)
Total Change in Degrees
Total Change in Minutes of Latitude (‘)
Minutes of Latitude Change Per Day
12/12 to 12/22
1/15 to 1/25
3/20 to 3/30
I just need to fill in the blank squares with the answers.
Period
Beginning Declination (to the nearest ½ degree)
Ending Declination (to the nearest ½ degree)
Total Change in Degrees
Total Change in Minutes of Latitude (‘)
Minutes of Latitude Change Per Day
12/12 to 12/22
1/15 to 1/25
3/20 to 3/30
Explanation / Answer
Period
Beginning Declination (to the nearest ½ degree)
Ending Declination (to the nearest ½ degree)
Total Change in Degrees
Total Change in Minutes of Latitude (‘)
Minutes of Latitude Change Per Day
12/12 to 12/22
1/15 to 1/25
3/20 to 3/30
Period
Beginning Declination (to the nearest ½ degree)
Ending Declination (to the nearest ½ degree)
Total Change in Degrees
Total Change in Minutes of Latitude (‘)
Minutes of Latitude Change Per Day
12/12 to 12/22
23o 23.5o 0.5o 30 minutes 30/10= 31/15 to 1/25
21o 19o 2o 120 minutes 120/10=123/20 to 3/30
0.5o 3.5o 4o 240 minutes 240/10=24Related Questions
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