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en.wikipedia.org/wiki/Structure_of_the_Earth

The structure of Earth can be defined in two ways: by mechanical properties such as rheology, or chemically.Mechanically, it can be divided into lithosphere, asthenosphere, mesospheric mantle, outer core, and the inner core.Chemically, Earth can be divided into the crust, upper mantle, lower mantle, outer core, and inner core.

www.clearias.com/interior-of-the-earth

In this article (geography section), we discuss the interior of the earth. Understanding the basic structure of earth is very important to learn higher concepts well. Also, the origin of many phenomena like earthquakes, volcanoes, tsunami etc are linked with the structure of earth’s interior.

www.youtube.com/watch?v=hmgR4PiGp1E

Learn about the structure of the earth's interior - crust, mantle and core and composition of its different layers. Tool i use to make videos:- http://amzn.t...

pubs.usgs.gov/gip/interior

Introduction. Three centuries ago, the English scientist Isaac Newton calculated, from his studies of planets and the force of gravity, that the average density of the Earth is twice that of surface rocks and therefore that the Earth's interior must be composed of much denser material.

www.windows2universe.org/earth/Interior_Structure/interior.html

Structure of the Interior of Earth Earth has a diameter of about 12,756 km (7,972 mi). The Earth's interior consists of rock and metal. It is made up of four main layers: 1) the inner core: a solid metal core made up of nickel and iron (2440 km diameter) 2) the outer core: a liquid molten core of nickel and iron ...

geology.com/nsta/earth-internal-structure.shtml

Earth's Core is thought to be composed mainly of an iron and nickel alloy. This composition is assumed based upon calculations of its density and upon the fact that many meteorites (which are thought to be portions of the interior of a planetary body) are iron-nickel alloys.

simple.wikipedia.org/wiki/Structure_of_the_Earth

The structure of the Earth is divided into layers. These layers are both physically and chemically different. The Earth has an outer solid layer called the crust, a highly viscous layer called the mantle, a liquid layer that is the outer part of the core, called the outer core, and a solid center called the inner core.

www.aboutcivil.org/interior-of-the-earth.html

The earth is divided into three main layers: Inner core, outer core, mantle and crust. The core is composed mostly of iron (Fe) and is so hot that the outer core is molten, with about 10% sulphur (S). The inner core is under such extreme pressure that it remains solid.

www.youtube.com/watch?v=N9ncfAsmiSg

This topic explains the inner layers of the earth's crust and how the earth looks like on both the inside and the outside. This is a product of Mexus Education Pvt. Ltd., an education innovations ...

courses.lumenlearning.com/.../chapter/the-composition-and-structure-of-earth

The Composition and Structure of Earth. ... The density of Earth’s surface layers is much less than the overall density of the planet, as calculated from the planet’s rotation. If the surface layers are less dense than average, then the interior must be denser than average. Calculations indicate that the core is about 85 percent iron metal ...