Assertion: terrestrial planet's material | /r/HasAspect | overall density
Facets:
Source sentences:
text: For an object like the Earth (or Venus, since it appears to be similar to the Earth, as already discussed) we have an outer rocky mantle consisting of various forms of ferromagnesian silicates, depending upon the pressure compressing the material at various depths, and an overall density 20 to 25% less than the actual density of the Earth; and an inner primarily metallic core consisting mostly of iron, but with lesser amounts of nickel and in the outer core additional materials, which has an overall density two to three times that of the Earth.