Moon%20Phases

1
Moon Phases
2
What forces keeps the moon in orbit around the
Earth, and the Earth in orbit around the sun?

• Gravity and Inertia

3
Phases of the Moon

• As the moon revolves around Earth, it appears to
  change shape - phases of the moon.
• It takes 29.5 days to complete.

4
Why does this happen?

• reflects sunlight towards Earth.
• Phase depends on where the moon is in relation to
  the sun and the Earth.

5

• Waxing Light is on the right
• Waning Light is on the left.

6
New Moon

• The moon is between the sun and the Earth.
• The moon is not seen.

7
Waxing Crescent

• The first curved piece that appears is a waxing
  crescent.

8
First Quarter

• The right half of the moon can be seen.

9
Waxing Gibbous

• More of the area on the right side becomes more
  visible.

10
Full Moon

• When the entire lighted side is visible.

11

• These first phases takes about two weeks (14.75).

12

• After this, the moon gradually appears to be
  getting smaller.

13
Waning Gibbous

• The majority of the left side can be seen.

14
Last Quarter

• The left half of the moon can be seen.

15
Waning Crescent

• Curved piece on left can be seen.