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The Moon in Relationship to the Earth

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

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The Moon in Relationship to the Earth

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  1. The Moon in Relationship to the Earth

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

  3. Relationship of Moon • 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.

  4. Causes of Moon Phase • The two things that can affect the moon phase are: • Where in the revolution the moon is • The amount of sunlight that the moon is reflecting

  5. Moon Phase Cycle 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

  6. New Moon • Occurs when the moon is positioned between the earth and sun. • The three objects are in approximate alignment (why "approximate" is explained below). The entire illuminated portion of the moon is on the back side of the moon, the half that we cannot see.

  7. Waxing Crescent • The moon is at a 45 degree angle in relationship between the earth and the sun.

  8. First Quarter • often called a "half moon"), happen when the moon is at a 90 degree angle with respect to the earth and sun. So we are seeing exactly half of the moon illuminated and half in shadow

  9. Waxing Gibbous • The moon is at a 135 degree angle in relationship between the earth and the sun. • As the angle increases so does the sunlit area of the moon we can see from earth.

  10. Full Moon • At a full moon, the earth, moon, and sun are in approximate alignment, just as the new moon, but the moon is on the opposite side of the earth, so the entire sunlit part of the moon is facing us. The shadowed portion is entirely hidden from view.

  11. Waning Gibbous • The moon is at a 135 degree angle in relationship between the earth and the sun. • As the angle increases so does the sunlit area of the moon we can see from earth.

  12. Last Quarter (third quarter) • often called a "half moon"), happen when the moon is at a 90 degree angle with respect to the earth and sun. So we are seeing exactly half of the moon illuminated and half in shadow

  13. Waning Crescent • The moon is at a 45 degree angle in relationship between the earth and the sun.

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