Without this layers, our Earth couldn’t have a magnetic field. The core makes up about 31% of the Earth. This is a table that shows the elemental chemical composition of the Earth's crust. The mantle is hot and represents about 68 percent of Earth’s mass. Without this magnetic field, our Earth could never have atmosphere, oceans, and life.

This magnetic field protects our Earth from the Sun’s deadly wind. This video illustrates the chemical make up of our planet.

98.4% of the Earth's crust consists of oxygen , silicon, aluminum, iron, … Core, mantle, and crust are divisions based on composition. Finally, the core is mostly iron metal.

Trace amounts of carbon dioxide, water vapor, and other gases are also present. It starts by introducing the chemical composition of the planet as a whole. Earth is the third planet from the Sun and the only astronomical object known to harbor life.According to radiometric dating estimation and other evidence, Earth formed over 4.5 billion years ago. Inner Core. Keep in mind, these numbers are estimates. They will vary depending on the way they were calculated and the source. The composition of the atmosphere of Earth is 21 percent molecular oxygen, 78 percent molecular nitrogen, and 1 percent argon. What is Earth made of? This is the hottest layer of the Earth, reaching a temperature of 7000 C; much hotter than the surface of the Sun.

The crust makes up less than 1 percent of Earth by mass, consisting of oceanic crust and continental crust is often more felsic rock.