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Layers of the Earth
Term | Definition |
---|---|
Asthenosphere | The solid layer with plasticity in the upper mantle that is located just below the lithosphere; lithospheric plates "float" and move on this layer |
Crust | The thin solid outermost layer of Earth; made of less dense silicates and is continental (landmasses) or oceanic (ocean bottoms) |
Inner Core | The sphere of solid nickel and iron at the center of Earth; surrounded by the liquid outer core |
Lithosphere | The cool, rigid, outermost layer of Earth consists of the crust and the uppermost part of the mantle; pieces of this layer are called lithospheric plates |
Mantle | The solid layer of Earth between the crust and the core; made of dense silicates |
Outer Core | The outer shell of Earth's core; surrounds the inner core and is made of liquid nickel and iron |
Plasticity | The condition of material in the asthenosphere, existing in a solid state yet having the ability to flow without being a liquid |