The Earth is divided into several layers which have distinct chemical and seismic properties now we see what is inside the earth…
The crust varies considerably in thickness. It is thinner under the oceans and thicker under the continents. The inner core and crust are solid the outer core and a mantle are plastic or semi-fluid. The various layers are separated by discontinues that are evident in seismic data.
Atmosphere = 0.0000051
Oceans = 0.0014
Crust = 0.026
Mantle = 4.043
Outer core = 1.835
Inner core = 0.09675
The core is composed mostly of iron. At the center of the core, the temperature may be as high as 7500 K, which is higher than surface of the Sun. The lower mantle is mostly silicon, magnesium and oxygen with some amount of iron, calcium and aluminium. The upper mantle mostly consists of olivine and pyroxene (iron/magnesium silicates) calcium and aluminium. We get most of this information from seismic activities, when samples from the upper mantle arive at the surface during volcanic eruptions. However, the majority of the Earth is inaccessible. The crust is primarily quartz (silicon dioxide) and consists of other silicates like feldspar. The Earth is the densest major body in the solar system.
The crust varies considerably in thickness. It is thinner under the oceans and thicker under the continents. The inner core and crust are solid the outer core and a mantle are plastic or semi-fluid. The various layers are separated by discontinues that are evident in seismic data.
Atmosphere = 0.0000051
Oceans = 0.0014
Crust = 0.026
Mantle = 4.043
Outer core = 1.835
Inner core = 0.09675
The core is composed mostly of iron. At the center of the core, the temperature may be as high as 7500 K, which is higher than surface of the Sun. The lower mantle is mostly silicon, magnesium and oxygen with some amount of iron, calcium and aluminium. The upper mantle mostly consists of olivine and pyroxene (iron/magnesium silicates) calcium and aluminium. We get most of this information from seismic activities, when samples from the upper mantle arive at the surface during volcanic eruptions. However, the majority of the Earth is inaccessible. The crust is primarily quartz (silicon dioxide) and consists of other silicates like feldspar. The Earth is the densest major body in the solar system.
