Name Lab # Due Date
Name_________________
THE SUN’S PATH
Introduction: The path the sun takes across the sky changes throughout the year. The positions of sunrise and sunset also change throughout the year. First, fill in the chart using specific compass directions (NE, NW, SE, SW, due east, and due west). Then, transfer this chart into your notes. Using the following diagrams please answer the following questions of the following pages, then come back and do these review questions on the bottom.
Season Position of Sunrise Position of Sunset
|Summer- June 21 | | |
|Fall- September 21 | | |
|Winter- December 21 | | |
|Spring- March 21 | | |
Questions
1. If you were to install a solar collector on the roof of your house, toward which direction would you point the solar collector to absorb the most amount of insulation? Explain your answer.
2. What material would you build your solar collector out of to trap the most insulation possible?
3. You love to sleep in every day and do not want bright sunlight to wake you up. On which wall of your house would you not put a window?
4. Your future daughter or son takes naps in the late afternoon and you do not want the sunlight to beam in and keep your child awake. On which wall would you not install a window to avoid sunlight entering the room in the afternoon?
SUN’S ARC DIAGRAM
A B C
EAST EARTH’S HORIZON NEW HYDE PARK WEST
Questions:
1. If arc A is the highest above the horizon that the sun reaches, what date would it be?
2. If arc C is the lowest to the horizon that the sun reaches, what date would it be?
3. If the sun was descending from arc A to arc C and was half way, what date would arc B represent?
4. If the sun was ascending from arc C to arc A and was half way, what date would arc B represent?
5. How many times a year would the sun reach position 3?
6. How many times a year would the sun reach position 7?
7. How many times a year would the sun reach position 8?
8. What time would the sun’s position at 1 indicate?
9. What time would the sun’s position at 5 indicate?
10. What time would the sun’s position at 3 or 8 represent?
11. What position would the sun be in to cast the shadow from the flagpole as indicated in the diagram?
12. Which sun position would represent a time of 12pm in December?
13. Which sun position would represent a time of 8:30am?
14. Which arc represents a 12 hour day?
The diagram below shows the path of the sun across the sky at different times of the year when viewed from New York State.
Apparent Motion Zenith (90°)
of the Sun
Path A
Path B
Path C
Horizon
Due East Due South Due West
Answer the questions below based on your knowledge of the Seasons and the diagram above. For some questions write down the Path or Paths that represent the answer.
1. ________________First day of Spring
2. ________________First day of Summer
3. ________________First day of Fall (autumn)
4. ________________First day of Winter
5. ________________Which path shows the sun in the sky for the LONGEST period
6. ________________ On what day of the year does the sun have the Longest Duration
7. ________________ Which path shows the sun in the sky for the SHORTEST period
8. ________________ On what day of the year does the sun have the Shortest Duration
9. ________________Which path shows the sun rising Due East and setting Due West
10. _______________On what two days of the year will the sun rise Due East and
_______________set Due West
11. _______________What general compass direction does the sun always appear to rise
12. _______________What general compass direction does the sun always appear to set
13. _______________At what time of day is the sun at its zenith
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