ESS
Grade-6
Easy
Question
Earth’s magnetic field is developed in _____.
- Crust
- Outer core
- Inner core
- Mantle
Hint:
It is in liquid state.
The correct answer is: Outer core
The correct option is b)Outer core.
The Earth's magnetic field is primarily caused by electrical currents in the liquid outer core. The Earth's core is hotter than the Curie point temperature of 1043 K, above which the iron spins become randomly oriented. Such randomization causes the material to lose its magnetization.
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