Moon
Moon
Diameter Distance
¼ the
diameter
of Earth
Distance
from
Earth is
384,000
km
Moon
Atmosphere
Moon
Gravity
Moon
Moon
Temperature Formation
None
1/6 of
Earth’s
gravity
100o C on the
lighted side
No Air
No Water
No Erosion
Moon
Density
Moon
Mass
Lower
Density
than Earth
3.3 g/cm3
1/80 the
mass of
Earth
Surface never
changes!
Impact
Theory
-100o C on the -Earth hit
dark side
by mars
size object
Moon Features
Maria
Dark Volcanic Covered Plains
Highlands
Light colored hills
Craters
Depressions and rays caused by impact from:
 meteoroids
 comets
 space junk
Lunar soil
 not soil – no organic matter or water
 made of dust and rock fragments called Regolith
Moon Motion
 Rises and sets like the sun except
1 hour later each day due to its
revolution around Earth
 Rotates & Revolves at the same
rate – every 27.3 days (~month)
 From Earth, we only see one side
of the moon because…it rotates at
the same rate it revolves.
Perigee – when the moon is closest to the Earth
Apogee – when the moon is farthest away from the Earth