structure of the Earth

structure of the Earth

In general, the structure is composed of:

1. The crust

• The outermost layer of the earth

• The thickness of approximately 8-40 km

• Consists of igneous rocks, metamorphic rocks

• The Earth's crust is divided into continental crust and the oceanic crust

The crust is composed of continental crust and the oceanic crust

In general, the structure is composed of:

2. earth's mantle

• layer surrounds the earth's core

• The thickness of approximately 2,900 km

• Consists of mafic minerals, namely magnesium and iron. Also contains rocks consisting of radioactive substances such as uranium.

• In general, the structure is composed of:

3. earth's core

• Layer the center of the earth, divided into 2 layers, the core layer bag. In the form of a liquid outer core and a bag. in a solid

• The thickness of around 3,500 km

• Consists of a liquid on the inner core and the solid state Luat in the inner core.

• implies the form of iron and nickel

• The temperature reached 3,000 ° C - 5,000 ° C

The process of formation of magma found in the earth's core.

Radioactive substances such as uranium in rock layers contained in the Earth's mantle

Uranium decay due to the high heating obtained from the pressure of the high surface

Uranium decay will cause the rocks around it melts

Rocks that have been melted and then accumulate to form magma towards the earth's core