Moon Phases - Welcome to 6th Grade Science with Ms. George
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.
http://www.nasm.si.edu/apollo30th/moontheater/phasepage2.html The movement 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
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 More information about Moon
Movement The moon does not move exactly around the Earths equator. It moves either above or below the Earths
center. Is there really a dark side of the moon? Due to gravity, the moon moves around the Earth with the
same 50% of it always facing Earth. We never see the other side of the moon, but is it always dark?
http://www.niehs.nih.gov/kids/ lunar/why_phases.gif 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 or Last quarter Full moon 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.
New Moon 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. First Quarter Moon 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. Third or Last Quarter Moon 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. Full Moon
There are also four other phases of the Moon sometimes used. 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
Waxing Crescent Moon http://btc.montana.edu/ceres/html/birthdayphases.html 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
Waxing Gibbous Moon http://btc.montana.edu/ceres/html/birthdayphases.html 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
Waning Gibbous Moon http://btc.montana.edu/ceres/html/birthdayphases.html 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
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