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Moon Phases. Half of the Moon is always lit up by the sun. As the Moon orbits the Earth, we see different parts of the lighted area.

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Presentation on theme: "Moon Phases. Half of the Moon is always lit up by the sun. As the Moon orbits the Earth, we see different parts of the lighted area."— Presentation transcript:

1 Moon Phases

2 Half of the Moon is always lit up by the sun. As the Moon orbits the Earth, we see different parts of the lighted area. http://www.nasm.si.edu/apollo30th/moontheater/phasepage2.html

3 The revolution of the Moon around the Earth makes the Moon look as if it is changing shape in the sky. http://btc.montana.edu/ceres/html/birthdayphases.htm

4 This is caused by the different angles from which we see the lighted part of the Moon's surface. These are called "phases" of the Moon. http://btc.montana.edu/ceres/html/birthdayphases.htm

5 http://www.niehs.nih.gov/kids/ lunar/why_phases.gif

6 The Moon passes through four major shapes during a cycle that repeats itself every 29.5 days. The phases always follow one another in the same order: New moon First quarter Third quarter Full moon

7 New Moon The lighted side of the Moon faces away from the Earth. This means that the Sun, Earth, and Moon are almost in a straight line, with the Moon in between the Sun and the Earth. The Moon that we see looks very dark

8 New Moon

9 First Quarter Moon The right half of the Moon appears lighted and the left side of the Moon appears dark. During the time between the New Moon and the First Quarter Moon, the part of the Moon that appears lighted gets larger and larger every day, and will continue to grow until the Full Moon. These phases are called Waxing.

10 First Quarter Moon

11 Third (Last) Quarter Moon Sometimes called Third Quarter. The left half of the Moon appears lighted, and the right side of the Moon appears dark. During the time between the Full Moon and the Last Quarter Moon, the part of the Moon that appears lighted gets smaller and smaller every day. It will continue to shrink until the New Moon, when the cycle starts all over again.

12 Third Quarter Moon

13 Full Moon The lighted side of the Moon faces the Earth. This means that the Earth, Sun, and Moon are nearly in a straight line, with the Earth in the middle. The Moon that we see is very bright from the sunlight reflecting off it.

14 Full Moon

15 There are also four other phases of the Moon sometimes used.

16 Waxing Crescent Moon This Moon can be seen after the New Moon, but before the First Quarter Moon. The crescent will grow larger and larger every day, until the Moon looks like the First Quarter Moon. ("Waxing" means increasing, or growing larger.) http://btc.montana.edu/ceres/html/birthdayphases.html

17 Waxing Crescent Moon http://btc.montana.edu/ceres/html/birthdayphases.html

18 Waxing Gibbous Moon This Moon can be seen after the First Quarter Moon, but before the Full Moon. The amount of the Moon that we can see will grow larger and larger every day. ("Waxing" means increasing, or growing larger.) http://btc.montana.edu/ceres/html/birthdayphases.html

19 Waxing Gibbous Moon http://btc.montana.edu/ceres/html/birthdayphases.html

20 Waning Gibbous Moon This Moon can be seen after the Full Moon, but before the Last Quarter Moon. The amount of the Moon that we can see will grow smaller and smaller every day. ("Waning" means decreasing, or growing smaller.) http://btc.montana.edu/ceres/html/birthdayphases.html

21 Waning Gibbous Moon http://btc.montana.edu/ceres/html/birthdayphases.html

22 Waning Crescent Moon This Moon can be seen after the Last Quarter Moon and before the New Moon. The crescent will grow smaller and smaller every day, until the Moon looks like the New Moon. ("Waning" means decreasing, or growing smaller.) http://btc.montana.edu/ceres/html/birthdayphases.html

23 Waning Crescent Moon http://btc.montana.edu/ceres/html/birthdayphases.html

24 http://www.opencourse.info/astronomy/introduction/04.motion_moon/moon_phases.gif We live in the northern hemisphere, so the Earth will always be shown looking down on the north pole. The arrows will always turn counter-clockwise no matter where you put the sun..

25 Waxing & Waning http://www.nasm.si.edu/apollo30th/moontheater/phasepage4.html

26

27 http://www.calvin.edu/~lmolnar/moon/images/phases.gif April 10

28 Moon Movie The movie is an animated GIF created by Antonio Cidadao from a sequence of still images taken during March and April 1998. Copyright Antonio Cidadao.Antonio Cidadao http://aa.usno.navy.mil/faq/docs/mo on_phases.html

29 MOON QUIZ!! http://starchild.gsfc.nasa.gov/docs/StarChi ld/solar_system_level2/moonlight.html

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