Suppose a student develops a scale model of the planets. Which two planets should be the closest in diameter on the model

Answer 1

If a student develops a scale model of the planets, the two planets that should be the closest in diameter on the model are Mercury and Mars.

Mercury has a diameter of about 4,879 kilometers, while Mars has a diameter of about 6,779 kilometers. Therefore, in order to create a scale model where the planets are represented accurately in terms of their relative sizes, Mercury and Mars would be the closest in diameter.