l lang="en" style="font-size: 14px;">stayinfiji.com 110G: distance EducationWe room looking under on the solar system, from over the north Pole. The Earthrotates top top its very own axis counterclockwise once a day (you can verify this bychecking that the sun will appear to climb in the east at dawn and set in thewest at dusk), and also the Moon orbits counterclockwise roughly the planet once amonth.The Moon has been drawn in that eight significant phases. In each case, a figure(
) placed below the Moon top top the surface of theEarth mirrors where one would certainly stand to watch the Moon directly overhead, and also thetime of day or night is identified. You can imagine that the planet is thecenter the a huge clock, and also as you stand on it you sweep through 24 (not12!) hrs with every full circle, creating our night and also day cycle.
You are watching: You observe a full moon rising at sunset. what will you see 6 hours later?
The Moon is always fifty percent illuminated (the side facing the Sun), and fifty percent inshadow (the side surprise from the Sun). Where must the Moon be (relative tothe Earth) so that we watch the portion of the illuminated side correspondingto the exactly lunar phase? What time is it if you space on the side of theEarth directly underneath this point?The complying with table list the eight major phases that the Moon. It mirrors theappearance of the Moon from Earth, and also the time that night or day in ~ which theMoon will certainly be directly overhead for each phase. Test your understanding bylooking at each phase, and also comparing the figure of the Moon in the tablewith the fraction of the Moon i m sorry is illuminated which deserve to be checked out fromEarth (as deduced indigenous the above figure).
|Full ||Waning gibbous ||Third quarter ||Waning crescent ||New ||Waxing crescent ||First quarter ||Waxing gibbous |
| || || || || || || |
|12am || 3am || 6am || 9am ||12pm || 3pm || 6pm || 9pm|
You may assume the it is noon as soon as the sunlight is directly overhead in the sky,6pm at sunset, midnight when the sunlight is most hidden behind the Earth, and 6amat sunrise. (Don"t worry around daylight savings time, and also remember that 12pmis noon, and 12am is midnight.)When considering climbing and setting times, you should think about when theMoon will show up on the horizon. The is essential to realize that in thefigure above, we have drawn the Earth and also the Moon much larger than theyreally room so that they will certainly be simple to see. In the number below, this strategy is repeated on the left. In the number onthe right, however, us have attracted the Earth and also Moon at your actual size(keeping the distance in between the Earth and the Moon constant). If you onlylooked in ~ the figure on the left, you might be tempted come say that the personneeded to rotate back a few degrees (rather then standing straight up), as isshown, in bespeak to watch the Moon top top the horizon. The number on the rightshould relief you that due to the fact that the Earth and also Moon space both much smaller thanthe distance in between them, you can see the Moon top top the horizon as soon as it lies afull quarter-turn away from you.
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You deserve to assume the the Moon will certainly lie above the horizon because that twelve hours outof every day, and also will be concealed on the various other side the the earth for twelvehours the end of every day. It appears on the eastern horizon, slowly risesthrough the skies for six hours until that reaches that maximum height in the sky(transits), and also then slowly sets because that six hours until it falls below thewestern horizon. The Moon will lie overhead six hours after rising, and willset six hours after that is overhead.We trace this this pattern out for the complete Moon below. It rises majesticallyabove the east horizon at roughly dusk, ascends v the sky untiltransiting in ~ midnight, and then slowly sets towards the western horizon,reaching it in ~ dawn.