To determine which planet is an inner planet and which one is an outer planet based on the length of their days, we should consider the general characteristics of planetary rotations in our solar system.
1. Understanding Planetary Day Lengths: In our solar system:
- Inner planets (such as Mercury, Venus, Earth, and Mars) generally have shorter day lengths.
- Outer planets (like Jupiter, Saturn, Uranus, and Neptune) typically have much longer days due to their rapid rotation.
2. Given Data:
- Planet A has a day length of 16 hours.
- Planet B has a day length of 1,408 hours.
3. Comparing with Known Day Lengths:
- The inner planets have significantly shorter day lengths. For example, Earth has a 24-hour day, while Mars has a day length very similar to Earth's at approximately 24.6 hours.
- The outer planets have much longer day lengths; for instance, Jupiter's day length is about 10 hours due to its rapid rotation, even though it's the largest planet.
4. Analyzing Planet A:
- A day length of 16 hours is characteristic of an inner planet. It's a short period, relatively close to the lengths of inner planets' days.
5. Analyzing Planet B:
- A day length of 1,408 hours is extraordinarily long. This is far beyond the day length of any inner planet and is more characteristic of outer planets, which can have much longer rotations.
Based on this analysis:
- Planet A, with a day length of 16 hours, is likely an inner planet because it has a shorter day length typical of inner planets in our solar system.
- Planet B, with a day length of 1,408 hours, is likely an outer planet due to its significantly longer day length, which is characteristic of outer planets.
Thus, the conclusion is:
Planet A is an inner planet, and Planet B is an outer planet.
