INDIAN GEOGRAPHY

THE EARTH

INTERNAL STRUCTURE OF EARTH

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Liquid outer core is _________ thick.
A
2240 km
B
2250 km
C
2260 km
D
None of these
Explanation: 

Detailed explanation-1: -Earth’s outer core is a fluid layer about 2, 260 km (1, 400 mi) thick, composed of mostly iron and nickel that lies above Earth’s solid inner core and below its mantle.

Detailed explanation-2: -Outer Core The outer core, about 2, 200 kilometers (1, 367 miles) thick, is mostly composed of liquid iron and nickel. The NiFe alloy of the outer core is very hot, between 4, 500° and 5, 500° Celsius (8, 132° and 9, 932° Fahrenheit).

Detailed explanation-3: -Unlike the yolk of an egg, however, the Earth’s core is actually made up of two distinct parts: a 2, 200 km-thick liquid outer core and a 1, 250 km-thick solid inner core. As the Earth rotates, the liquid outer core spins, creating the Earth’s magnetic field.

Detailed explanation-4: -The outer core is 2, 300 kilometers (1, 429 miles) thick, while the inner core is 1, 200 kilometers (746 miles) thick. The outer core is mainly composed of a nickel-iron alloy (liquid iron), while the inner core is almost entirely composed of a pure solid iron body.

Detailed explanation-5: -Mantle-2, 900 km thick. Outer Core-2, 200 km thick. Inner Core-1, 230 to 1, 530 km thick.

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