Important Points • See today’s notes: http://mctcteach.org/astronomy/ – 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.
Important Points See today’s notes: //mctcteach.org/astronomy/ – Objectives, Lecture Summary, Homework If you haven’t.
Dec 16, 2015
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Important Points
• See today’s notes: http://mctcteach.org/astronomy/– Objectives, Lecture Summary, Homework
• If you haven’t given me a code to use for your grades on the class website, see me after.
• 2nd D2L Quiz is available. Take the quizzes as often as you want. Not graded.
Moon
Moon Terminology
http://www.astronomy.org/StarWatch/January/1-15-08-moon.jpg
•Terminator•Craters•Mare•Phases•Rotation•Revolution
Observing Projects:Moon Phases (starts today)Moon Craters (starts next week)
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
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 east2. Toward the west
(Show on Starry Night)
What is moving?1. Moon orbits2. Earth spins3. Both
What is moving that predominantly causes the motion you just saw?
1. Moon orbits2. Earth spins3. Sun moves
About how long does Earth take to spin (rotate) once?1. ~1 hour2. ~1 day3. ~1 month4. ~1 year
About how long does Moon take to orbit (revolve) once around Earth?1. ~1 hour2. ~1 day3. ~1 month4. ~1 year
Which way does Moon revolve (orbit)?1. Same direction that Earth spins2. Opposite direction that Earth spins
(View from space with Solar System simulator)(Draw it)
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)
If you note Moon’s position from one hour to the next, predict if it will move1. East to west2. West to east
If you note Moon’s position from one night to the next, predict if it will move1. East to west2. West to east
Starry Night for both
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
How much does Moon move?
Add degrees to drawing
Moon Phases
What we see from Earth…New
Waxing Crescent
First Quarter
Waxing Gibbous
Full
Waning Gibbous
Last Quarter
Waning Crescent
Moon Phases
What we see from space…
Moon Phases
Orerry with light
Moon Phases
Orerry with light
Sun
Moon Phases
Drawing/explanation of Phases and Moon location in orbit around Earth
Observing Project: Moon Phases
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).
http://antwrp.gsfc.nasa.gov/apod/ap011015.html
http://antwrp.gsfc.nasa.gov/apod/ap050623.html
http://antwrp.gsfc.nasa.gov/apod/image/0505/lighthouse_landolfi_big.jpg
http://apod.nasa.gov/apod/ap120824.html
• Does the Moon rotate?
• Moon’s libration• http://antwrp.gsfc.nasa.gov/apod/ap040829.h
tml
Moon Phases Survey
Sun
Earth
Sunlight
NOT TO SCALE
Moon’s Orbit
A
B
C
D
E
Moon Phases SurveyTop viewNot to scaleFive positions of Moon
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. Ab. Bc. Cd. De. They all have the same amount of sunlight illuminating the surface.
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. Ab. Bc. Cd. De. They all have the same amount of sunlight illuminating the surface.
SunEarth
Sunlight
NOT TO SCALE
Moon’s Orbit
A
B
C
DE
13. The arrow on the right points to one phase of the Moon. Which position in the drawing below corresponds to that phase?
SunEarth
Sunlight
NOT TO SCALE
Moon’s Orbit
A
B
C
DE
14. The arrow on the right points to one phase of the Moon. Which position in the drawing below corresponds to that phase?
SunEarth
Sunlight
NOT TO SCALE
Moon’s Orbit
A
B
C
DE
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 http://www.cstarsoas.org.nz/index.php?mod=art&id_pag=52
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.
Moon Survey Answers
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. Ab. Bc. Cd. De. They all have the same amount of sunlight illuminating the surface.
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. Ab. Bc. Cd. De. They all have the same amount of sunlight illuminating the surface.
SunEarth
Sunlight
NOT TO SCALE
Moon’s Orbit
A
B
C
DE
13. The arrow on the right points to one phase of the Moon. Which position in the drawing below corresponds to that phase?
SunEarth
Sunlight
NOT TO SCALE
Moon’s Orbit
A
B
C
DE
14. The arrow on the right points to one phase of the Moon. Which position in the drawing below corresponds to that phase?
SunEarth
Sunlight
NOT TO SCALE
Moon’s Orbit
A
B
C
DE
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 http://www.cstarsoas.org.nz/index.php?mod=art&id_pag=52
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.
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
Sunset Part 1 Observation• Jan. 20 to Feb. 12 to complete• Take a picture of the sunset with 30o open region to
the right of the sun (spring sunset). Use fist method (arm outstretched) to measure 30o (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 2nd picture in EXACT SAME SPOT
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• Moon Phases Start: Jan. 22; Due: Mar. 3• Safe Sun Prep Work Start: Mar. 19; Due: Mar. 26+• Sunset – Part 2 Start: Apr. 2; Due: Apr. 28• Moon Craters Start: Jan. 29; Due: May 5• Star Gazing Start: Jan. 29; Due: May 5• Telescope Start: Jan. 29; Due: May 5
Related Documents
