You find a moon orbiting a planet and you measure the distance between the moon and the planet once a night over the course of a few weeks. Its behavior is shown in the figure below where the time shown is the time since your first observation. What is this moon's orbital period?
A) 22 days
B) 20 days
C) 18 days
D) 11 days
E) 6 days

Question

You find a moon orbiting a planet and you measure the distance between the moon and the planet once a night over the course of a few weeks. Its behavior is shown in the figure below where the time shown is the time since your first observation. What is this moon's orbital period? 
A) 22 days 
B) 20 days 
C) 18 days 
D) 11 days 
E) 6 days

Quizplus · Accepted Answer

The Answer of You find a moon orbiting a planet and you measure the distance between the moon and the planet once a night over the course of a few weeks. Its behavior is shown in the figure below where the time shown is the time since your first observation. What is this moon's orbital period? 
A) 22 days 
B) 20 days 
C) 18 days 
D) 11 days 
E) 6 days

You Find a Moon Orbiting a Planet and You Measure