1. The Moon’s Motions
Aim: How does the moon move in relation to the Earth?

2. Objectives Identify the phases of the moon
Distinguish between lunar and solar eclipses

3. The Moon’s Orbit Moon rises in the east
Sets in the west due to the earth turning on its axis
Moon orbits every 27.3 days
Moon’s orbit is elliptical, not circular
Perigee: when moon is nearest Earth
Apogee: when moon is furthest from Earth

5. Moonrise… Every time Earth rotates (24 hrs), the moon moves 130 East
The Earth rotates 130 in 50 minutes, therefore
The moon rises and sets about 50 minutes later each day

6. Phases of the Moon are Cyclic

10. Moon Phases Half of the moon is always receiving light from the sun.
The “lit” portion that is visible to earth varies as the moon REVOLVES around earth. THIS CAUSES THE PHASES OF THE MOON.
More of the lit surface= waxing
More of the dark surface = waning

11. The 8 Phases of the Moon Waxing Light on right
Changes from all dark to light
New moon to full moon
Waning
Light on left
Changes from all light to dark
Full moon to new moon
Crescent
Almost all the dark half faces the earth
Gibbous
Almost all the bright half faces the earth

12. What we observe from earth

13. Phases of the Moon
Moon phases worksheet