Multiple choice

Which planet/dwarf planet has the highest density?

  1. Mercury

  2. Earth

  3. Jupiter

  4. Pluto
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Earth is the densest planet in the Solar System, with an average density of about 5.51 grams per cubic centimeter. This high density is due to its metallic core and rocky mantle. Mercury is the second densest, while gas giants like Jupiter and dwarf planets like Pluto have much lower densities.

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