Structure Of Earth

Project on Structure of Earth Submitted by : Tilak Raj G.S.S.S Ajaibwali

Structure of Earth 

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Earth is made up of a series of layers that formed early in the planet’s history. Heavier material gravitated toward the center and lighter material floated to the surface The lower mantle consists of molten rock, which is surrounded by partially molten rock in the Link to see the Diagram asthenosphere.

Types of Layers 

Crust

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Mantle

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Core

Crust  

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Crust is outermost layer of Earth. The crust is solid and relatively thin. The dry land of Earth’s surface is called the continental crust. It is about 15 to 75 km (9 to 47 mi) thick. The crust has a definite boundary. Back

Mantle 

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Mantle lies between the outer crust and the core. Temperatures in the mantle are high, reaching about 3700° C (apx. 6700° F). The relative size of the mantle can be understood by likening the earth in cross-section to a softboiled egg. The mantle is separated from theBack

Core  

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Core is the innermost part of Earth. The core of Earth extends from beneath the mantle to the very center of the planet. The radius of the core is approximately 3,500 km (2,200 mi). Earth’s core is the source of the planet’s magnetic field. Back

Diagram of Earth’s Structure

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Bibliography   

Encarta Encyclopedia Science book of Class 6th. Computer Faculty