1. Lunar Phases and Eclipses

3. Reasons for the Phases
The moon revolves around the Earth once every 27 days.
Only ½ of the moon is lit by the sun.
The different phases that we see result from our seeing the Moon from different angles.

5. Names of the Phases 1. New Moon 2. Waxing Crescent 3. First Quarter
The phases in chronological order
1. New Moon
2. Waxing Crescent
3. First Quarter
4. Waxing Gibbous
5. Full Moon
6. Waning Gibbous
7. Third Quarter
8. Waning Crescent
The term ‘waxing’ means growing.
The term ‘waning’ means shrinking.

6. The Waxing Cycle of Phases
Waxing Crescent
First Quarter
Waxing Gibbous
Full Moon

7. The Waning Cycle of Phases
Waning Gibbous
Third Quarter
Waning Crescent
New

8. Eclipses

9. Rotation: Spinning on an axis of rotation. (Creates day and night.)
Revolution: Movement of a body around something else.
(Creates a year or a lunar cycle.)

10. Solar Eclipse The moon casts a shadow on the Earth.
Occurs during new moon phase
Inclination model

11. Lunar Eclipse The Earth casts a shadow on the moon.
Occurs during full moon phase.

12. Anatomy of a Shadow Penumbra Region of partial shadow
Partial eclipse will be seen
Umbra
Region of total shadow
Total eclipse will be seen.
Umbra
Penumbra

14. Lunar eclipse information