explain the internal structure of earth
Answers
It consists of an outer silicate solid crust, a highly viscous asthenosphere and solid mantle, a liquid outer core whose flow generates the Earth's magnetic field, and a solid inner core.
Answer:
structure of the earth-
1. crust or lithosphere-
The crust is the outermost layer. its thickness where is between 5 to 8 kilometre under the ocean floors to 35 km. under the continental masses. silica (SI)and alumina (AI) are the main mineral constitutes of the continental mass and it is called SIAL. the average density of The crust is 3.0 gram per cubic centimetre.
2. mantal or mesosphere-
the metal which is the second layer extends upto a depth of 2900 km below the crust. it is made up of dense and heavy materials iron(Fe), magnesium(Ma) and silica(Si). it consists of two layers the upper mantle and the lower mantle. the average of the upper mantle is 870 degree Celsius and the rocks here are in semi solid state the average temperature of the lower mantle is about 2200 degree Celsius and it is in a solid state the average density of the mantle is 3.5 gram to 5.5 gram per cubic centimetre.
3. core or barysphere-
the innermost layer is called the ko it has a thickness of about 3,500 km. this too is divided into two layers the outer core and the inner core while the temperature of outer core is 2200 degree c the temperature of inner core is 5000 degree c. this layer is called knife as its main components are nikel(Ni) and iron(Fe). the average density of the core is between 3.5 gram to 5.5 gram per cubic centimetre. the temperature increases at the rate of 1 degree Celsius for every 32 metres of depth. the temperature of the core being extremely high the matter is in a molten state and it is called magma. this thread molten magma ID apps from the interior of the earth through the volcanoes and is called lava.
Explanation:
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