Shape, Size, Structure of the Earth

Silicon and Magnesium

submerged layer o the lithosphere

Structure of the Earth

Crust, Mantle, Outer core, Inner core, Lithosphere, Mesosphere

Inner core

an extremely hot, solid sphere of mostly iron and nickel at the center of the Earth

Silicon and Aluminum

found in the upper layer of the Earth's crust.

Crust

hard and rigid, the Earth's outermost and thinnest layer.

Core

innermost portion of the Earth, believed to be metallic. Composed of iron and nickel

Mantle

middle layer of the Earth

Outer Core

the only liquid layer of the Earth

Geodesy

the science that studies and measures the exact size and dimensions of the Earth

Asthenosphere

the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.