Exploring Earth's Composition

The three divisions of the Earth based on composition are the core, mantle, and crust.

The crust makes up less than 1 percent of Earth's mass.

The core is mostly iron metal.

<p>The two divisions of the Earth based on mechanical properties are the lithosphere and asthenosphere.</p> Signup and view all the answers

<p>The lithosphere is a brittle, rigid solid composed of the crust and upper mantle, while the asthenosphere is partially molten upper mantle material that can flow.</p> Signup and view all the answers