What is the country's structure?
Earth's structure is layered and commonly divided into four parts: silicate bark , viscous cloak , outer core of liquid iron and inner core . Occasionally, the mantle is further divided into the inner and outer shells based on the differences of the types of rocks, temperature, density and viscosity. The bark, which is the only part of the country that is relatively cool and completely firm, accounts for less than 1% of its total volume.
The first part of the structure of the Earth, the bark, consists of a chilled rock floating on top of a viscous cloak. The thickness of the bark varies mainly depending on whether it is ocean (5 km (3 mi) thick) or continental (30 km (20 miles) to 50 km (30 miles)). The ocean bark consists of dense rocks such as Gabbro, basalt and diabase, while the continental bark is made up of somewhat lighter rocks such as granite. The deepest hole ever -scared by people into the bark is 11.26 km (7.62 miles), about a third of the way to the mantle.
under the bark is a cloak, the highest part of which consists of rocks such as olives, pyroxens, spinel and granet, while the deeper parts are made of high -pressure polymorphic minerals with a similar elemental composition to the rock above. The sheath is a plastic solid that flows slowly over the millennium and creates streams of convection currents similar to those that are seen when pasta is inserted into boiling water, only at much slower speed. These convection currents can create volcanic hotspots and cause a continental drift. The cloak is the strongest part of the Earth's structure, about 2,890 km thick (1,800 miles) and accounts for 70% of the Earth's volume. Scientists have learned a lot about the cloak by studying how they affect the seismic waves they go through.
The Central Little Parts of the Earth's Structure are outer and inner cloak. The outer core is made of molten iron and nickel. At this depth, the temperature is sufficient to melt iron and nickel, but the pressure is not enough to force itself to become pe.the outcome. The outer core contains the vast majority of the planet of iron and nickel that sank to the core when the Earth in the process of creating about 4.6 billion years ago. It is believed that the swirling currents in the outer core create the Earth's magnetic field. The inner core has a similar make -up to the inner core, but the pressure is sufficient to make it solid. Temperatures in the inner core can exceed temperatures on the surface of the sun.