Introduction to Physical Geology Practice Exam 2026 - Free Geology Practice Questions and Study Guide

The main idea is the order of the outer gaseous planets by distance from the Sun. From closest to farthest, they are Jupiter, Saturn, Uranus, Neptune. So the sequence that matches this progression is Jupiter, Saturn, Uranus, Neptune. A schedule that places Neptune before Saturn would put Neptune closer to the Sun than Uranus, which doesn’t reflect their actual orbits. In our solar system, Uranus sits between Saturn and Neptune, with Neptune being the farthest of the four.