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.

h...
The revolution of the Moon around the
Earth makes the Moon look as if it is
changing shape in the sky.

http://btc.montana...
Phases of
the Moon
It is caused by
the different
angles from
which we see
the lighted part
of the Moon's
surface.

http://...
1. New Moon
• The Moon's not
illuminated side is
facing the Earth.
• The Moon is not
visible (except
during a solar
eclips...
2. Waxing Crescent
• The Moon appears to
be partly but less
than one-half
illuminated by direct
sunlight.
• The fraction o...
3. First Quarter
• One-half of the
Moon appears to
be illuminated by
direct sunlight.
• The fraction of the
Moon's disk th...
4. Waxing Gibbous
• The Moon appears to
be more than onehalf but not fully
illuminated by direct
sunlight.
• The fraction ...
5. Full Moon
• The Moon's
illuminated side is
facing the Earth.
• The Moon appears
to be completely
illuminated by
direct ...
6. Waning Gibbous
• The Moon appears to
be more than one-half
but not fully illuminated
by direct sunlight.
• The fraction...
7. Last Quarter
• One-half of the
Moon appears to
be illuminated by
direct sunlight.
• The fraction of the
Moon's disk tha...
8. Waning Crescent
• The Moon appears to
be partly but less
than one-half
illuminated by direct
sunlight.
• The fraction o...
Waxing
(Right is
illuminated)

Waning
(Left is
illuminated)
Moon phases
Moon phases
Moon phases
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Moon phases

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Moon phases

  1. 1. Moon Phases
  2. 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. 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. 4. Phases of the Moon It is caused by the different angles from which we see the lighted part of the Moon's surface. http://btc.montana.edu/ceres/html/birthdayphases.htm
  5. 5. 1. New Moon • The Moon's not illuminated side is facing the Earth. • The Moon is not visible (except during a solar eclipse).
  6. 6. 2. Waxing Crescent • The Moon appears to be partly but less than one-half illuminated by direct sunlight. • The fraction of the Moon's disk that is illuminated is increasing.
  7. 7. 3. First Quarter • One-half of the Moon appears to be illuminated by direct sunlight. • The fraction of the Moon's disk that is illuminated is increasing.
  8. 8. 4. Waxing Gibbous • The Moon appears to be more than onehalf but not fully illuminated by direct sunlight. • The fraction of the Moon's disk that is illuminated is increasing.
  9. 9. 5. Full Moon • The Moon's illuminated side is facing the Earth. • The Moon appears to be completely illuminated by direct sunlight
  10. 10. 6. Waning Gibbous • The Moon appears to be more than one-half but not fully illuminated by direct sunlight. • The fraction of the Moon's disk that is illuminated is decreasing.
  11. 11. 7. Last Quarter • One-half of the Moon appears to be illuminated by direct sunlight. • The fraction of the Moon's disk that is illuminated is decreasing.
  12. 12. 8. Waning Crescent • The Moon appears to be partly but less than one-half illuminated by direct sunlight. • The fraction of the Moon's disk that is illuminated is decreasing.
  13. 13. Waxing (Right is illuminated) Waning (Left is illuminated)
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