Now consider the second major feature (two types of planets). Which of the following statements are true for the terrestrial and jovian planets in our solar system?
A. Jovian planets have more moons than terrestrial planets.
B. Jovian planets orbit farther from the Sun than terrestrial planets.
C. Jovian planets are larger in mass than terrestrial planets.
D. Jovian planets are made most of metal, rock, and helium.
E. Jovian planets are larger in size than terrestrial planets.
Answer:
A. Jovian planets have more moons than terrestrial planets.
B. Jovian planets orbit farther from the Sun than terrestrial planets.
C. Jovian planets are larger in mass than terrestrial planets.
E. Jovian planets are larger in size than terrestrial planets.
Explanation: Note that the characteristics relating to size, mass, and composition are considered to be defining characteristics for the terrestrial and jovian categories; that is, we would identifiy planets in other systems as terrestrial or jovian if they have these same general characteristics. In contrast, while all the jovian planets in our solar system orbit much farther from the Sun than the terrestrial planets, there are other solar systems in which jovian planets have been found to orbit much closer to their stars.
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