Answer
The density differences between terrestrial and Jovian planets are mainly due to their differences in composition and formation. Terrestrial planets are primarily composed of rocks and metals, which are relatively dense materials. Jovian planets, on the other hand, are primarily composed of gas and ice, which are less dense than rocks and metals.
Work Step by Step
In addition, the formation of the two types of planets played a role in their density differences. Terrestrial planets formed closer to the Sun where it was hotter, and thus the lighter elements like hydrogen and helium were vaporized and blown away, leaving behind the denser rocks and metals. Jovian planets, on the other hand, formed farther away from the Sun where it was colder, allowing lighter elements like hydrogen and helium to condense into solid and liquid form, leading to the formation of gas and ice giants with lower densities.
