Final answer:
The volume of Uranus is not less than ten times the volume of Neptune; they are comparable in size. Uranus has a lower density, suggesting it may have a slightly larger volume than Neptune, but their volume ratio is close to 1:1.
Step-by-step explanation:
The question you've asked pertains to the volume comparison between Uranus and Neptune. Despite their similarities, the ice giants Uranus and Neptune do differ in size. Uranus likely has a larger volume as it has a similar mass to Neptune but a lower density. The density of Uranus is about 1.3 g/cm³, whereas Neptune's density is 1.6 g/cm³. This suggests that Uranus has a larger volume than Neptune.
It is not accurate to say that the volume of Uranus is less than ten times the volume of Neptune. The true volume ratio of Uranus to Neptune is closer to 1:1, as they are both substantially smaller than Jupiter and Saturn and have comparable masses. Unlike the significantly larger gas giants, Jupiter and Saturn, Uranus and Neptune have not been as efficient in attracting hydrogen and helium gases, leading to smaller atmospheres in proportion to their cores. Additionally, while both planets have a core of rock, metal, and ice, they do not exhibit internal pressures high enough to liquefy hydrogen