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प्रश्न
Describe the layers of the interior of the earth and their chemical composition.
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उत्तर
The interior of the earth is divided into three major parts i.e. crust, mantle and core. The crust consists of the majority of silica and aluminium and is called ‘SIAL’, mantle is called SIMA due to the majority of silica and magnesium and is called SIMA, which makes the bed of oceans and the core is called NIFE with excess of Nickel and Iron (Ni + Fe).
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संबंधित प्रश्न
What is composed of NIFE?
Give a geographical reason for the following:
Temperature starts rising gradually towards the interior of the earth.
Why is the Earth slightly flattened at the poles?
Explain briefly the structure of the earth.
Give reasons for the following:
Earth movements have modified the Earth’s surface.
Mention the layers of the interior of the Earth.
The presence of large quantities of ______ in the core is responsible for the Earth’s Gravitational force.
Match the following:
| (a) | Crust | (i) | 2,171 km |
| (b) | Upper Mantle | (ii) | 2,259 km |
| (c) | Lower Mantle | (iii) | 30 km |
| (d) | Outer Core | (iv) | 1221km |
| (e) | Inner Core | (v) | 720 km |
What is SIMA?
Give reason for the following:
Generation of the Earth’s Magnetic field.
