Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories...
-
Upload
randell-gilbert -
Category
Documents
-
view
213 -
download
0
Transcript of Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories...
![Page 1: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/1.jpg)
Moon Phases& Eclipses
What patterns, motions, and events do we notice in the sky?
What theories can we create to explain them?
How can these theories be tested?
![Page 2: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/2.jpg)
The next LUNAR eclipse YOU can see…
Sunday night, 27 September 2015
![Page 3: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/3.jpg)
The next TOTAL SOLAR eclipse YOU can see…
Monday morning, 21 August 2017
![Page 4: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/4.jpg)
The next “nearby” TOTAL SOLAR eclipse YOU can see…
August 21 2017
![Page 5: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/5.jpg)
Observations of the Moon Sequence of phases
every “moonth”
We always see the same “face”
![Page 6: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/6.jpg)
Observations of the Moon Occasionally turns dark
gray & even red!
Can seem bigger next to the horizon!
![Page 7: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/7.jpg)
Phases repeat ~30 daysA “moonth” of time
Tied to religious calendars around the globeRamadanChinese New YearEasterRosh HashanahGudi Padwa & Vasant
Panchami
![Page 8: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/8.jpg)
Observations of the Moon
A sequence of repeated phases over about a “moonth”
![Page 9: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/9.jpg)
![Page 10: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/10.jpg)
Observations of the Moon
IS the phase the same on the same day around the world?
Do people in London see the same phase as we do in Hayward?
![Page 11: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/11.jpg)
Observations of the Moon
IS the phase the same on the same day around the world?
Most people would say…… NO!They are wrong!Compare times
For Earth to rotate: hoursFor the Moon to move & change phase: days
![Page 12: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/12.jpg)
Observations of the Moon
Do people in both hemispheres see the same view?
Does an observer at Chabot see the same thing as someone in Santiago, Chile?
Most people would say…… er…YES?
They are wrong!
![Page 13: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/13.jpg)
Phases are “reversed” in Southern Hemisphere!
Same side of moon is still lit by the sun
Observation from “down under” reverses view.
![Page 14: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/14.jpg)
Seeing the moon from different places on Earth!
![Page 15: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/15.jpg)
Seeing the moon from different places on Earth!
Northern Hemisphere Southern Hemisphere
![Page 16: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/16.jpg)
The Moon Illusion!
![Page 17: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/17.jpg)
The Moon Illusion!
![Page 18: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/18.jpg)
What theories can we develop?
WHY does the moon seem larger?Because it IS larger?Because it is an illusion
We see horizon different than zenith?We don’t have a “reference” for Moon when it’s
higher in the sky?
How can you TEST these hypotheses?
![Page 19: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/19.jpg)
The Moon Illusion!
The Moon DOES vary in distance….
![Page 20: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/20.jpg)
The Moon Illusion!
….but not over a few hours!
![Page 21: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/21.jpg)
The Moon Illusion!
Perhaps… we don’t see the sky as symmetric – the horizon is farther away than the sky above us?
![Page 22: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/22.jpg)
Solar Eclipses Occur at NEW moon phase
While partial, a “bite” out of the Sun
Last 1+ hours
IF total…Sky goes dark for a few minutesSee planets and stars near the sunSee Sun’s corona and chromosphere
![Page 23: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/23.jpg)
Shadow of
the moon
covers small
oval on Earth
![Page 24: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/24.jpg)
![Page 25: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/25.jpg)
Corona
Chromosphere
![Page 26: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/26.jpg)
![Page 27: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/27.jpg)
Annual Solar Eclipse
Time-lapse series of photos
-What time of day?
-How long did this take?
Hint: Northern Hemisphere!
![Page 28: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/28.jpg)
Lunar Eclipses Occur at FULL moon phase
The Moon looks full, but dim
The Earth’s curved shadow falls across the moon
Last 2+ hours
IF total…Moon can look red for an hour
![Page 29: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/29.jpg)
At the start of a lunar eclipse, you can see the Earth’s Shape through its shadow…
![Page 30: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/30.jpg)
![Page 31: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/31.jpg)
Lunar Eclipse Time-Lapse
Note the curved shadow of the Earth across the moon.
![Page 32: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/32.jpg)
Predicting Eclipses
Eclipse “seasons”About twice a yearAlways at least (2) eclipses
One of each (lunar + solar)About 2 weeks apart
Pattern repeats about 18 years for location and type
![Page 33: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/33.jpg)
Eclipse “Seasons”
![Page 34: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/34.jpg)
The next LUNAR eclipse YOU can see…
Sunday night, 27 September
2015
![Page 35: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/35.jpg)
Sunday night, 27 September 2015
•Moon rises with partial eclipse already started
•Total beings 7:11 PM
•Max Eclipse 7:47
•Total Ends 8:23
•Partial Ends 9:27
•Then… just a full moon!
![Page 36: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/36.jpg)
![Page 37: Moon Phases & Eclipses What patterns, motions, and events do we notice in the sky? What theories can we create to explain them? How can these theories.](https://reader030.fdocuments.us/reader030/viewer/2022032606/56649eab5503460f94bb1418/html5/thumbnails/37.jpg)
A really “nearby” TOTAL SOLAR eclipse YOU might see…
August 12 2045
Chabot College