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- CRUST EARTH (lithosphere)
Lithosphere that taste is a hard layer at the topmost layer of the earth. When compared with other layers, the innermost layer of the lithosphere is thin, cold and hard. On the land surface, its thickness reaches 30-70 km, whereas in oceanic and volcanic areas can be decreased up to 50-10 km. This layer covers the surface of the earth for approximately 1% of the volume of the earth.
- EARTH'S MANTLE
This layer is between the earth's crust and the core of the earth, with a thickness of approximately 2,900 km. This layer consists of two parts, the lower mantle and upper mantle.
Another name the upper mantle is the asthenosphere, which consists of a viscous fluid and heat (magma). This layer is a section that looks like melted plastic, its thickness is about 100-200 km.
The diameter of the globe about 12,746 km.
Contained in the mantle magma over the earth contains iron, magnesium and calcium are more than those in the outer skin of the earth. surface temperature of the magma in the earth's core is close to 4000 Degrees Celsius. Due to the Earth's mantle is very hot, then the movement becomes slow.
- EARTH'S CORE
The core layer at the center of the globe consists of two layers, the outer core and inner core. The core layer at a depth of 2900-6370 km. The thickness of the outer core about 2,200 km and is composed of liquid iron and nickel. The temperature in this layer can reach 4500 Degrees Celsius. Meanwhile, at the core of its thickness reaches 1250 km. In this layer the temperature can rise to more than 6,000 Degrees Celsius. Although it has cooled for 4.5 billion years, the core is still hot. This is what affects the earth's magnetic field.
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