Earth’s Moon
Structure:
Diameter is _______________________ of the Earth’s diameter and about the same as
the width of __________________________________.
Mass is __________________________ of Earth’s mass.
1
Origin:
Rejected Theories:
Collision Theory (best current theory):
2
Looking at the Moon:
Galileo Galilei:
First European scientist to use a _________________________ to observe the moon.
Observed:
Craters ­
Maria (MAH ree uh) ­
Mare (MAH ray) ­
3