Sun, Moon, Earth,

1
Sun, Moon, Earth,

• How do they work together to help life survive?
• Phases of the Moon

2
Dark side of the Moon

• The moon rotates on its axis once every 27.3
  days.

3
Dark side of the Moon

• The moon rotates on its axis once every 27.3
  days.
• The moon revolves around the Earth once every
  27.3 days.

4
Dark side of the Moon

• The moon rotates on its axis once every 27.3
  days.
• The moon revolves around the Earth once every
  27.3 days.
• This means that the side of the moon we see is
  always the same side.

5
Earth Moon System

• The average distance from the Moon to the Earth
  is 384,404 km.

6
Earth Moon System

• The average distance from the Moon to the Earth
  is 384,404 km.
• Closest approach is 356,334 km.

7
Earth Moon System

• The average distance from the Moon to the Earth
  is 384,404 km.
• Closest approach is 356,334 km.
• Farthest is 406,610 km.

8
Earth Moon System

• The average distance from the Moon to the Earth
  is 384,404 km.
• Closest approach is 356,334 km.
• Farthest is 406,610 km.
• 30 times the diameter of the Earth.

9
Earth Moon System

• The average distance from the Moon to the Earth
  is 384,404 km.
• Closest approach is 356,334 km.
• Farthest is 406,610 km.
• 30 times the diameter of the Earth.
• Diameter of the Moon is 3475.9 km 0.27 diameter
  of the Earth (12756 km)

10
Phases of the Moon

• The phase you see depends on how much of the
  sunlit side of the moon faces Earth.

11
The moon seen from space
12
The moon seen from the Earth