Pluto's density is 1.8 g/cm³. Iron is about 5 g/cm³. Rock is about is 3 g/cm³. Ice or water is 1.0 g/cm³. This implies that A) Pluto has a large iron-nickel core. B) Pluto is about 50% water and 50% rocky material. C) Pluto is all rock. D) Pluto is all water or water ice.

Question

Quizplus · Accepted Answer

Pluto's density suggests it is a mix of rock and ice, approximately 50% of each, rather than being composed entirely of rock, iron, or ice.

Pluto's Density Is 1