Read the analemma and match the dates below to solar declination values. 1. 20 d
ID: 153030 • Letter: R
Question
Read the analemma and match the dates below to solar declination values.
1. 20 degrees North
A. July 25 B. February 22 C. November 15 D. April 30 E. September 5 F. June 21
2. 14 degrees North
A. July 25 B. February 22 C. November 15 D. April 30 E. September 5 F. June 21
3. 7 degrees North
A. July 25 B. February 22 C. November 15 D. April 30 E. September 5 F. June 21
4. 23.5 degrees North
A. July 25 B. February 22 C. November 15 D. April 30 E. September 5 F. June 21
5. 10 degrees South
A. July 25 B. February 22 C. November 15 D. April 30 E. September 5 F. June 21
6. 17 degrees South
A. July 25 B. February 22 C. November 15 D. April 30 E. September 5 F. June 21
June 20 30 10 10 0 20 2 5 10 25 20 20 25 15 10 5 5 0 15 30 20C0 25 20 25 15 0 0 6 8° 10° 20 12 25 14° 30 154% he analemma 2 15 a25 20 20 25 30December 10 5 20 25 30 ©2013 Pearson Education, Inc.Explanation / Answer
By studying the analemma, we can correspond the dates(X axis) to the solar declination values(Y axis). It's done by the projection method.
1.20 degrees North latitude in the Y axisacorresponds to the date July 25th on the X axis graph.
2.14 degrees North latitude on the Y axis corresponds to the date 30th April on the X axis.
3. 7 degrees North on the Y axis of the graph corresponds to 5th September on the X axis on the graph.
4. 23.5 degrees North on the Y axis of the graph corresponds to 25th July on the X axis of the graph.
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