Libration is the apparent wobbling of the Moon due to the shape and orientation of its orbit and rotation axis. This phenomenon allows us to see slightly more than 50% of the Moon's surface from Earth over time.

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Libration Is

Question 13

Multiple Choice

Libration is:

A) apparent wobbling of the Moon due to the shape and orientation of its orbit and rotation axis.
B) a custom of toasting astronauts with champagne when they touch down on the Moon.
C) exact synchronicity between orbital motion of the Moon and its rotation about its own axis.
D) gradual movement of the terminator across the visible face of the Moon.

Correct Answer: