The following diagrams are the same as those from Part A. This time, rank the planets from left to right based on the amount of time it takes each to complete one orbit, from longest to shortest. If you think that two (or more) of the diagrams should be ranked as equal, drag one on top of the other (s) to show this equality. (Distances are to scale, but planet and star sizes are not.)

From the way the planets are ranked, i can you had rightly ranked the planets in the way it ought to be based on the time taken to complete an orbit. The time taken for a planet to complete its orbit is known as the orbital period. It is important to remember that the pattern is among the ideas which are related as part of Kepler's third law: "Planets with larger average orbital distances have longer orbital periods."