Which statement best describes the density of the inner planets in our solar system?

• A. The inner planets and outer planets have approximately the same densities.
• B. The inner planets have higher densities than the outer planets.
• C. The inner planets have lower densities than the outer planets.
• D. The density of the inner planets is determined solely by their distance from the Sun.

Answer: (B)

Verified step by step guidance

1. Understand the concept of planetary density, which is mass divided by volume, and how it relates to the composition of planets.
2. Recall that the inner planets (Mercury, Venus, Earth, Mars) are primarily composed of rocky materials and metals, which are denser substances.
3. Recognize that the outer planets (Jupiter, Saturn, Uranus, Neptune) are mostly composed of gases and ices, which have lower densities compared to rocky materials.
4. Compare the densities of the inner and outer planets based on their compositions, noting that inner planets have higher densities due to their rocky nature.
5. Conclude that the statement 'The inner planets have higher densities than the outer planets' best describes the density differences in our solar system.