The mean density of a planet is
A) another way of describing its total mass.
B) the amount of mass in one cubic meter of material at the planet's surface.
C) the amount of mass in one cubic meter of material in the planet's core.
D) its total mass divided by its volume.

Question

Quizplus · Accepted Answer

The mean density of a planet is defined as its total mass divided by its volume, so option D is the correct choice. Option A is incorrect because while the mean density is related to the planet's mass, it is not the same thing as the total mass. Option B is incorrect because the mean density is an average of the entire planet, not just the surface material. Option C is incorrect because the mean density is an average of the entire planet, not just the core material.

The Mean Density of a Planet Is