Layna Meyerpeter TrackingMotionsWorksheet (pdf)

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Clemson University *

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1030

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Physics

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Apr 3, 2024

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pdf

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Tracking Motions Worksheet These lab activities have evolved over many years of use in Clemson University’s Department of Physics and Astronomy general astronomy laboratory. Contributors include, in chronological order, Tom Collins, Mark Leising, Neil Miller, Peter Milne, Grant Williams, Donna Mullenax, Jessica Crist, Keith Davis, Amber Porter, Steven Bromley, and David Connick. Please direct all questions, complaints, and corrections to David Connick (dconnic@clemson.edu) who is responsible for all errors and omissions. Student Name: ____Layna Meyerpeter____ Section: _Mon 10-11:50am__ The Sun's Yearly Motion: 16th of each month Table 1. Month Constellation Rises (am) (Hour:minute ) Sets (pm) (Hour:minute) Daylight Length (hours) Altitude (above horizon) (degrees Minutes) Jan Sagittarius 7:37 AM 5:44pm 10 hours, 7 mins +34º 26' 08.0" above horizon Feb Aquarius 7:15 AM 6:15 PM 11 hours +43º 01' 49.0" above horizon March Pisces 7:40 AM 7:39 PM 12 hours +53º 42' 21.9" above horizon April Pisces 6:58 AM 8:04 PM 13 hours, 6 mins +65º 37' 16.3" above horizon May Taurus 6:27 AM 8:28 PM 14 hours +74º 31' 41.6" above horizon June Taurus 6:17 AM 8:46 PM 14 hours, 30 mins +78º 40' 22.9" above horizon July Gemini 6:30 AM 8:44 PM 14 hours, 14 mins +76º 29' 43.3" above horizon Aug Leo 6:52 AM 8:18 PM 10 hours, 30 mins +68º 51' 27.7" above horizon Sept Leo 7:15 AM 7:36 PM 12 hours, 12 mins +57º 45' 39.8" above horizon
1. What month is the Sun's altitude a maximum? __June_____ 2. What month is the Sun's altitude a minimum? ____December___ 3. In which month is the length of the day the shortest? ____December_____ 4. In which month is the length of the day the longest? ___June____ 5. Describe the relationship between the altitude and the length of the day. ____Month of June has the highest altitude, so the higher the altitude longer the day.___ 6. During the longest day of the year, what is the distance from the Earth to the Sun in AU? (You will need to set the date based on your table and look at the info panel for the Sun) __In June: 1.015802 AU____ 7. During the shortest day of the year, what is the distance from the Earth to the Sun in AU? (You will need to set the date based on your table and look at the info panel for the Sun) ___In December: 0.984159 AU_______ 8. During lunch, you overhear a group of friends claiming that the cold weather in winter is due to the Earth being furthest from the Sun in its orbit. From your data above, is this claim true? Explain. This is not true because in the winter months because in December the distance is 0.984159 AU which is closet to sun but it is still the coldest time of the time. In June, the distance is 1.015802 AU which is the furthest from sun. So the seasons are based on the tilt not the distance. 9. What is the true cause of the Seasons? (Use the information in your table and your knowledge from ASTR1010, you should mention the sun’s altitude in your answer) The true cause of the Seasons is the tilt of the Earth towards and away from the Sun. In the summer the tilt is towards, with longer days and more sunlight so it is warmer and in the winter the Sun is away, so shorter days and colder weather. 10. Does the Sun spend an equal amount of time in every Zodiacal constellation? Why or why not? (Give examples) (Look at the path of the sun through the constellations, remember the sun moves along the ecliptic at a constant rate.) October Virgo 7:37 AM 6:55 PM 11 hours, 18 mins +46º 09' 21.0" above horizon November Libra 7:06 AM 5:25 PM 10 hours, 19 mins +36º 22' 56.6" above horizon December Ophiuchus 7:31 AM 5:22 PM 9 hours, 51 mins +32º 00' 14.4" above horizon
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