How many orders of magnitude are there between the diameter of a planet like Earth and the typical size of a planetary system?
A) one
B) two
C) three
D) six

Question

Quizplus · Accepted Answer

The diameter of Earth is roughly 12,742 km while a typical planetary system can have a size of around 100 billion km. This is a difference of 10^10 km or 10^13 cm. Therefore, there are six orders of magnitude between the diameter of a planet like Earth and the typical size of a planetary system.

How Many Orders of Magnitude Are There Between the Diameter