The orbital periods of planets ________ with their average distance from the Sun.
A) decrease
B) remain constant
C) increase
D) vary irregularly

Question

Quizplus · Accepted Answer

According to Kepler's third law of planetary motion, the orbital period of a planet is proportional to the square root of its average distance from the Sun. Therefore, as the average distance from the Sun increases, so does the orbital period.

The Orbital Periods of Planets ________ with Their Average Distance