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Important Points See today’s notes: – Objectives, Lecture Summary, Homework If you haven’t.

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Presentation on theme: "Important Points See today’s notes: – Objectives, Lecture Summary, Homework If you haven’t."— Presentation transcript:

1 Important Points See today’s notes: – Objectives, Lecture Summary, Homework If you haven’t given me a code to use for your grades on the class website, see me after. 2 nd D2L Quiz is available. Take the quizzes as often as you want. Not graded.

2 Moon

3 Moon Terminology Terminator Craters Mare Phases Rotation Revolution Observing Projects: Moon Phases (starts today) Moon Craters (starts next week)

4 Motion Everything is in motion Some motion is easy to see, some is not Earth rotates and revolves in the counterclockwise direction Moon rotates and revolves in the counterclockwise direction

5 Moon’s Motion You decide to watch our moon for a few hours one night. Which way does it move in the sky? 1. Toward the east 2. Toward the west (Show on Starry Night)

6 What is moving? 1. Moon orbits 2. Earth spins 3. Both What is moving that predominantly causes the motion you just saw? 1. Moon orbits 2. Earth spins 3. Sun moves

7 About how long does Earth take to spin (rotate) once? 1. ~1 hour 2. ~1 day 3. ~1 month 4. ~1 year

8 About how long does Moon take to orbit (revolve) once around Earth? 1. ~1 hour 2. ~1 day 3. ~1 month 4. ~1 year

9 Which way does Moon revolve (orbit)? 1. Same direction that Earth spins 2. Opposite direction that Earth spins (View from space with Solar System simulator) (Draw it)

10 If you watch Moon for a few hours, which motion dominates? 1. Moon’s motion due Earth’s spin (rotation) 2. Moon’s motion due to its own orbit around Earth (revolution) (Draw it)

11 If you note Moon’s position from one hour to the next, predict if it will move 1. East to west 2. West to east If you note Moon’s position from one night to the next, predict if it will move 1. East to west 2. West to east Starry Night for both

12 Conclusion on Moon’s motion: Minute to minute the Sun, Moon, stars appear to rise in east and set in west due to Earth’s spin (rotation). Day to day, Moon moves west to east due to Moon’s orbit (revolution) around Earth

13 How much does Moon move? Add degrees to drawing

14 Moon Phases What we see from Earth… New Waxing Crescent First Quarter Waxing Gibbous Full Waning Gibbous Last Quarter Waning Crescent

15 Moon Phases What we see from space…

16 Moon Phases Orerry with light

17 Moon Phases Orerry with light Sun

18 Moon Phases Drawing/explanation of Phases and Moon location in orbit around Earth Observing Project: Moon PhasesMoon Phases

19 Moon Phases Observation Jan. 22 to Mar 3 to complete Record phases and location of the Moon over 4 separate dates. Ideally you try to observe 2-4 different phases of the Moon. There are 8 phases of the Moon over ~28 days. Class website has more details in Moon Phases observation file. Turn in the Moon Phases Observation sheet (print from the website calendar).

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23 Does the Moon rotate?

24 Moon’s libration tml tml

25 Moon Phases Survey

26 Sun Earth Sunlight NOT TO SCALE Moon’s Orbit A B C D E Moon Phases Survey Top view Not to scale Five positions of Moon

27 Sun Earth Sunlight NOT TO SCALE Moon’s Orbit A B C D E 11. Which position of Moon has the GREATEST amount of sunlight illuminating the Moon’s surface? a. A b. B c. C d. D e. They all have the same amount of sunlight illuminating the surface.

28 Sun Earth Sunlight NOT TO SCALE Moon’s Orbit A B C D E 12. Which position of Moon has the LEAST amount of sunlight illuminating the Moon’s surface? a. A b. B c. C d. D e. They all have the same amount of sunlight illuminating the surface.

29 Sun Earth Sunlight NOT TO SCALE Moon’s Orbit A B C D E 13. The arrow on the right points to one phase of the Moon. Which position in the drawing below corresponds to that phase?

30 Sun Earth Sunlight NOT TO SCALE Moon’s Orbit A B C D E 14. The arrow on the right points to one phase of the Moon. Which position in the drawing below corresponds to that phase?

31 Sun Earth Sunlight NOT TO SCALE Moon’s Orbit A B C D E 15. The arrow on the right points to one phase of the Moon. Which position in the drawing below corresponds to that phase? Moon images from /index.php?mod=art&id_pag =52

32 16. In the moon phase pictures on the right, what causes Moon to change its appearance this way? a.As Moon orbits Earth, Earth’s shadow covers Moon. b.Clouds block part of Moon from our view. c. As Moon orbits Earth, we see different views of Moon’s sunlit side.

33 Moon Survey Answers

34 Sun Earth Sunlight NOT TO SCALE Moon’s Orbit A B C D E 11. Which position of Moon has the GREATEST amount of sunlight illuminating the Moon’s surface? a. A b. B c. C d. D e. They all have the same amount of sunlight illuminating the surface.

35 Sun Earth Sunlight NOT TO SCALE Moon’s Orbit A B C D E 12. Which position of Moon has the LEAST amount of sunlight illuminating the Moon’s surface? a. A b. B c. C d. D e. They all have the same amount of sunlight illuminating the surface.

36 Sun Earth Sunlight NOT TO SCALE Moon’s Orbit A B C D E 13. The arrow on the right points to one phase of the Moon. Which position in the drawing below corresponds to that phase?

37 Sun Earth Sunlight NOT TO SCALE Moon’s Orbit A B C D E 14. The arrow on the right points to one phase of the Moon. Which position in the drawing below corresponds to that phase?

38 Sun Earth Sunlight NOT TO SCALE Moon’s Orbit A B C D E 15. The arrow on the right points to one phase of the Moon. Which position in the drawing below corresponds to that phase? Moon images from /index.php?mod=art&id_pag =52

39 16. In the moon phase pictures on the right, what causes Moon to change its appearance this way? a.As Moon orbits Earth, Earth’s shadow covers Moon. b.Clouds block part of Moon from our view. c. As Moon orbits Earth, we see different views of Moon’s sunlit side.

40 7 Observation Projects Planetarium (10 points) Sunset – Part 1 (10 points) Moon Phases (10 points) Safe Sun Prep Work (10 points) Sunset – Part 2 (10 points) Moon Craters (10 points) Star Gazing (10 points) Telescope (10 points) TOTAL POINTS = 80

41 Sunset Part 1 Observation Jan. 20 to Feb. 12 to complete Take a picture of the sunset with 30 o open region to the right of the sun (spring sunset). Use fist method (arm outstretched) to measure 30 o (3 fist lengths) to the right/north of sunset now. Specific directions on website for what you need to write down. Turn in the picture with details listed in the calendar sunset observation file. Part 2: Apr. 2 to Apr. 28 to complete the 2 nd picture in EXACT SAME SPOT

42 7 Observation Projects OBSERVING PROJECTS (All 7, in order of due date) Planetarium (Exploradome at MCTC): Feb. 3 Sunset – Part 1 Start: Jan. 20; Due: Feb. 12 Sunset – Part 1 Moon Phases Start: Jan. 22; Due: Mar. 3 Moon Phases Safe Sun Prep Work Start: Mar. 19; Due: Mar. 26+ Safe Sun Prep Work Sunset – Part 2 Start: Apr. 2; Due: Apr. 28 Sunset – Part 2 Moon Craters Start: Jan. 29; Due: May 5 Moon Craters Star Gazing Start: Jan. 29; Due: May 5 Star Gazing Telescope Start: Jan. 29; Due: May 5 Telescope


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