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## Earth, Moon, Sun

1 review
by: Alyssa Notetaker

32

2

2

# Earth, Moon, Sun GEO 220

Alyssa Notetaker
DePaul
GPA 3.7

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This is describing the sun, moon, and earth and how it relates to oceanography
COURSE
Oceanography
PROF.
John Goldman
TYPE
Class Notes
PAGES
2
WORDS
KARMA
Free

## 2

1 review
"If you want to pass this class, use these notes. Period. I for sure will!"
Nova Miller

## Popular in Geography

This 2 page Class Notes was uploaded by Alyssa Notetaker on Wednesday January 13, 2016. The Class Notes belongs to GEO 220 at DePaul University taught by John Goldman in Fall 2016. Since its upload, it has received 32 views. For similar materials see Oceanography in Geography at DePaul University.

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## Reviews for Earth, Moon, Sun

If you want to pass this class, use these notes. Period. I for sure will!

-Nova Miller

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Date Created: 01/13/16
Alyssa Kerr Oceanography November 11th, 2015 The Moon and The Earth The moon and earth have a special relationship. The moon and earth orbit around a point of space called a barycenter. Of course, the difference between the earth and moon is that the earth is eighty (80) times the mass of the moon, the earth has four (4) times the diameter of the moon, the earth is also one of the heaviest planets for its size, and the moon is made up of rock. This places the barycenter of the earth and moon to be about four thousand (4000) miles from earth’s center. It is important to understand the relationship that the earth and moon has in order to understand the phases of the moon and the relationship the phases of the moon has on the tidal range on earth. The moon goes through phases as it is orbiting the earth. It takes the moon twenty-seven point three (27.3) days to orbit the earth. A lunar day is twenty-four hours and ﬁfty minutes (24 hours, 50 minutes). The lunar day is how long it takes the moon or rather the earth to get to the same point that the moon was in position for from the previous day. Furthermore, the moon is illuminated by the sun causing the moon to have phases as it orbits or as the earth rotates. The diagram below shows the phases of the moon. When the moon is in between the sun and earth, the moon is not illuminated and therefore is a new moon. When the moon orbits to the twelve (12) o’clock position, the moon is partially illuminated by the sun and is in its ﬁrst quarter phase. When the earth is in between the moon and sun, the moon is illuminated fully by the sun and this phase is called a full moon. Once the moon orbits to the six (6) o’clock position and is perpendicular to the earth and sun, the moon is partially illuminated and this is called the third quarter phase. Alyssa Kerr Oceanography November 11th, 2015 The phases of the moon has an effect on the tidal range on earth. When the earth, sun and moon are aligned in syzygy, this causes spring tides. This happens twice a month at the full moon and new moon. Spring tides are when the lunar and solar tidal bulges line up, causing constructive interference and the tides to be at their highest points. When the earth, sun and moon are at a right angle or are perpendicular to each other, neap tides occur. Neap tides are tides that happen twice a month during the ﬁrst or third quarter moon phases. The lunar and solar tidal bulges are not lined up and causes destructive interference. The diagram below shows the lunar and solar tidal bulges at different points in comparison to the position of the moon phases and the sun.

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