Question
list the compositional layers in order of most dense to least dense
Answers
GPT-5 mini
For Earth, from most dense to least dense:
1. Inner core (solid iron–nickel) — ~12.8–13.1 g/cm³
2. Outer core (liquid iron–nickel) — ~9.9–12.2 g/cm³
3. Mantle (silicate rocks; lower mantle denser than upper) — ~3.3–5.6 g/cm³ (lower ≈4.4–5.6, upper ≈3.3–4.4)
4. Crust (silica-rich; oceanic crust is denser than continental) — oceanic ≈3.0 g/cm³, continental ≈2.6–2.7 g/cm³
If you mean only the three compositional layers in a single term: core > mantle > crust. Densities vary with depth and composition.
1. Inner core (solid iron–nickel) — ~12.8–13.1 g/cm³
2. Outer core (liquid iron–nickel) — ~9.9–12.2 g/cm³
3. Mantle (silicate rocks; lower mantle denser than upper) — ~3.3–5.6 g/cm³ (lower ≈4.4–5.6, upper ≈3.3–4.4)
4. Crust (silica-rich; oceanic crust is denser than continental) — oceanic ≈3.0 g/cm³, continental ≈2.6–2.7 g/cm³
If you mean only the three compositional layers in a single term: core > mantle > crust. Densities vary with depth and composition.