Moon phases

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Information about Moon phases
Education

Published on March 9, 2014

Author: AbbieMahinay

Source: slideshare.net

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 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

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

1. New Moon • The Moon's not illuminated side is facing the Earth. • The Moon is not visible (except during a solar eclipse).

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.

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.

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.

5. Full Moon • The Moon's illuminated side is facing the Earth. • The Moon appears to be completely illuminated by direct sunlight

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.

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.

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.

Waxing (Right is illuminated) Waning (Left is illuminated)

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